Yes, I make mistakes. I made a mistake in one of my recent videos. It is so subtle it took almost 7000 views before someone noticed and let me know, however, it is still a mistake. Therefore, I have fixed the mistake and this video replaces the previous version. I guarantee you I have made mistakes while teaching in the classroom which went unnoticed. This is what I love about posting all of my lectures to UA-cam, my mistakes will be noticed and I can fix them. Please, if you have a link to the previous AP Physics 1: Simple Harmonic Motion Review video, please update that link to: ua-cam.com/video/IUJBFeokd-0/v-deo.html FYI: The mistake was, in the words of Mario Penaloza, whom I thank both for noticing and letting me know about the mistake, "If position #1 is already to the right then the graph you showed for velocity is wrong because the derivative of cos(x) (position) is -sin(x) not sin(x) … Let me know if I'm wrong.” That’s correct, I forgot a negative sign, that is all it was. However, it made the velocity graph incorrect, which is unacceptable.
you are awesome . one of the best physics teacher on youtube...simple and clear... I also like how you just save time by speeding it up which is being wasted in writing and which eventually make the lectures near 40 min long.
Seriously, thank you so much. I've learned more in 12 minutes than I have in a week. You really break it down and make it easy to understand concepts that usually fly over my head. Exactly what a teacher is supposed to do. I hope you continue doing this. I can tell you put so much effort into these vids. Again, thank you.
I have the online exam in a week and a half and your channel is probably one of the best studying channel in any subject. Thankfully, waves and electricity are not on this year's exam, although I only have 25 and 15 minutes for questions 1 and 2 respectively. Thank you for the assist Mr.P, Billy, Bobby and Beau!
Hey, i really like your videos and they are really helpful!! I've been struggling a lotttttt in my AP Physics class, but your lectures make perfect sense and you really simplified the problems!! You deserve one million subscribers!!! :DDD
These videos are amazing! I saw the time lapse video of making a Flipping Physics video, and I just have to say thank you for dedicating so much time and energy to wayward physics students like me! XD You're a physics genius and an editing genius!
Thank you so much! Although I am an IB student this actually helps me reviewing everything again! I didn't remember physics could be this interesting and fun!
thank you so much for this video and all your other review videos in the playlist. just studied more physics in 2 days than the entire year for my mock ap exam/ final exam tomorrow. wish me luck
Im really grateful for you and ur hard work put into these videos! I applied for a job this summer and if I get it, the first thing I want to do is give 20 dollars to you from my first paycheck for all the efforts you put into these! Thank you so much! You’re amazing man
After 4 months, I watched EVERY single AP Physics 1 video in your playlist & Website. I have taken notes for nearly every video. You became a regular part of my day, and your teaching and enthusiasm and your righteousness like donating to charity is so amazing. I couldn't have asked for a better teacher. I wish to major in physics, so I used your teaching material to learn and grow, and next school year I'm taking AP Physics! You are my first step into this field, and I can't wait to try new problems and eventually learn Mechanics and E&M from you. Your effort on this channel is amazing, and I love your style of teaching. I loved Billy, Bobby, & Bo and I miss the swing reverse and you fading away at the end of each video. Can't wait for what I'll do next with physics
That is one heck of a feat my friend. I think that's almost 40 hours of videos. I am impressed. I would say you are very ready for AP Physics next year! I look forward to hearing from you after you have done my calculus-based physics videos!
@@FlippingPhysics Thank you so much! I will make a note of them! Having the graphs are so helpful. I noticed the connection especially in #2 of the 2020 Sample Questions that CB just released. Once again, thanks for these awesome videos!
It takes the background of Differential Equations to know how to derive this from the equation of motion. This is a typical example of a problem in this class that you learn to solve about a third of the way through the semester. The period also doesn't depend on the length of the spring. For a pendulum, it does depend on the initial position theta0, but that is a second order effect. In introductory physics, you usually stick to the small amplitude pendulum, where you approximate sine(theta) = theta, such that period is independent of amplitude. Given an amplitude 22 degrees and less, you'll have no more than a 1% error. It cannot be solved in closed-form for the large amplitude, and requires using an infinite series. Knowing the solution in advance, I can show you how to work backwards with this problem, and show why the sine wave is a solution to the differential equation. You can derive from Newton's laws that the equation of motion takes the following form. And this is the case of any example of simple harmonic motion. x"(t)+ K*x(t) = 0 The K is not necessarily the spring constant. Although in the mass-spring example, K=k/m. In the example of a pendulum, replace x with theta, and K=g/L, and you have the small angle approximation for the equation of motion of a pendulum. x"(t) indicates acceleration, the second derivative of x relative to time. x(t) indicates position as a function of time. The two equations that can solve this differential equation are sine and cosine, centered around x=0, both with the same frequency. Set up a linear combination of sine and cosine with an arbitrary constant in front of both. Assign w as the coefficient in front of t, and assign A and B as amplitude coefficients of each wave. x(t) = A*sin(w*t) + B*cos(w*t) With trig identities, you can show that this is an alternative way to express it: x(t) = X0*cos(w*t + phi) Take the first & second derivative. x'(t) = A*w*cos(w*t) - B*w*sin(w*t) x"(t) = -A*w^2*sin(w*t) - B*w^2*cos(w*t) Factor out -w^2: x"(t) = -w^2 * (A*sin(w*t) + B*cos(w*t)) Notice that x(t) is inside x"(t), and therefore: x"(t) = -w^2 * x(t) And you can show that this satisfies the original equation of motion: x"(t)+ K*x(t) = 0 -w^2*x(t) + K*x(t) = 0 Solve for w, and we get: w = sqrt(K) Does this look familiar? This means that the angular frequency is equal to the square root of the factor in front of x, in the equation of motion. By definition of the radian, there are 2*pi radians in a full cycle. Thus to get the Hertz frequency f, we divide w by 2*pi. Take the reciprocal of f, and get period T. Thus: w = sqrt(K) f = sqrt(K)/(2*pi) T = 2*pi/sqrt(K)
I'm in a college calculus based mechanical physics class right now and a differential equations class. Although this material is strictly about the AP Physics exam, I still find the material helpful. It doesn't look like Calculus is used in the AP curriculum, which makes it difficult for high school students I believe. A lot of these quantities come from derivatives. Second order differential equations can be used to model the spring-mass system. Anyway, great videos!
Calculus is not used in the AP Physics 1/2 classes, however, the AP Physics C classes do use calculus. flippingphysics.com/calculus.html I do agree that the physics makes more sense using calculus, and I also think the reverse is true (calculus makes more sense with physics!). Glad you find my videos helpful.
The graph is in radians since f is in units of 1/radians, and when you multiply f by something in units of radians, you get some # that isn’t a multiple of pi... so that means the units of graph are radians (cos(kx) is usually acknowledged with radians) right?
just wanted to ask a question about the velocity of the mass, as it starts from position 2 to mean position 1 , does the velocity increases when moving toword mean position 1, if so how can how can we say the accerlation is maximum even though we know that when we first let the mass, it is initially at rest, so body moving from rest at position1 should move with positive acceleration. Where as we say acceleration of mass decreases moving from position2 to position1 .
+muhabbat Khan I'm not really sure what you are asking, however, I bet the answer is in this in-class lecture video: ua-cam.com/video/Lvtl1VRUBFg/v-deo.html
Three years late, but I am confused on one part of the video Regarding simple harmonic motion in terms of circular motion, you drew a graph of the position of the object. Along the vertical axes there is a A+ and an A- which I am assuming signifies amplitude. However, you also stated that amplitude is equivalent to the radius, which is always constant. How can the amplitude change according to the graph if it is always constant given that it is equivalent to the radius of the circle?
Is there a reason why the displacement of the block on the spring is measured from its point of connection to the spring, and not by its center of mass?
Traditionally it is measured that way because the location of the equilibrium position would be independent of the size of the block which is attached to the spring. However, as long as you are consistent and clear with your solution throughout the problem as to where you have defined the location of the equilibrium position, identifying the equilibrium position at the center of mass of the block attached to the spring should be fine.
Hello! Just wondering, based on the velocity graph you demonstrated, wouldn't acceleration be negative between Position 1 and 2 since the slope of the velocity graph is negative between Position 1 and 2 or x=0 and x=pi/2? I was just wondering since the thumbnail shown within the video says the opposite if this is the case😅👍
Flipping Physics Oh I was wondering why the velocity graph shows the acceleration to be negative between Positions 1 and 2, but yet the thumbnail picture (which was shown in the video) shows acceleration to be positive between Positions 1 and 2. Should acceleration be negative regardless on this interval?
Why is the velocity 0 at the ends as it is changing direction, so the velocity should be non-zero. No? And why is it maximum at the equilibrium position where a=0?
+Mrdubstep484 Sorry, however, I have to plans to make AP Physics 2 review videos. Paul Anderson has a bunch of AP Physics 2 videos you could check out. www.bozemanscience.com/ap-physics-2-video-list
yes, viewing uniform circular motion from the side makes it simple harmonic motion. Imagine an object resting on a record player. Viewed from above the object moves in uniform circular motion. The tangential speed is uniform, the centripetal acceleration is uniform, the radius is uniform. Now view the object from the side. Now you only observe the motion of the object in one direction, which is not uniform. This website has a good visual of this. eng.mu.edu.tr/~tugrul/g_phys1/lecture_notes/oscillations/page7.html Look at the first animation. I totally need to make a video of this at some point.
I believe acceleration is linear with simple harmonic motion such as a horizontal-spring-block-frictionless system and becomes curvy when dealing with simple harmonic motion pertaining to circles
Not sure if you're still wondering about this, but the reason his graph is not linear is because the x (independent) axis is theta, not x. Theta is linearly proportional to time, so you're seeing how the acceleration varies with time. If he had plotted a vs. x, it would be linear like you said.
how would you find where the kinetic energy is the equal to the potential energy in the spring because it isn't halfway between position 1 and 2 or 2 and 3 if i remembered correctly? edit: grammar
"find where the kinetic energy is the equal to the potential energy in the spring" Set the equation for kinetic energy equal to the equation for elastic potential energy. Substitute in velocity and position SHM equations. Solve. I bet it is kind of tricky. Probably going to end up with the tangent of angular frequency times time plus the phase constant, take the inverse tangent and solve for time. That is the time at which KE and PEe are equal. Then you can plug the time back into the position SHM equation. That's my best guess without actually working it out. Hope that helps.
I have used the equation which is on the AP Physics 1 equation sheet provided by The College Board. I actually prefer the force of the spring equation with the negative sign in it.
once again... EXCELLENT!!!.. in every respect!!.. I'd tell you to get a HAIRCUT but my Hair is just as long!! LOL.... Peace BROTHER!! lol Physics RULES...
@@FlippingPhysics Yes your videos helped a lot. My physics teacher except us to just know this instead of helping us go through the process of knowing this for our exam. Similarly, he does not put in any grades or any work we do so we don't know what's are grade currently.
Any chance you could help me out by doing what I ask people to do in the following video? bit.ly/2y4tOCA It would be a great way to show your appreciation!
trying to teach myself a year of physics in a day before the exam
yes. just yes.
Try 4 hours before lmao
Lmaoooooooooooooooooooooo i have it in 2 hours
Welp 😂😭😭
same issue, one year later
Lauren T some things never change
If I pass the exam this will be the reason why I passed. You are a true life saver. Your videos make me understand physics easier.
Well, I do hope you pass the exam.
did you pass the exam? i have it tomorrow morning
@@adoor2806 how was yours? mines tomorrow morning
Yes, I make mistakes. I made a mistake in one of my recent videos. It is so subtle it took almost 7000 views before someone noticed and let me know, however, it is still a mistake. Therefore, I have fixed the mistake and this video replaces the previous version. I guarantee you I have made mistakes while teaching in the classroom which went unnoticed. This is what I love about posting all of my lectures to UA-cam, my mistakes will be noticed and I can fix them.
Please, if you have a link to the previous AP Physics 1: Simple Harmonic Motion Review video, please update that link to: ua-cam.com/video/IUJBFeokd-0/v-deo.html
FYI: The mistake was, in the words of Mario Penaloza, whom I thank both for noticing and letting me know about the mistake, "If position #1 is already to the right then the graph you showed for velocity is wrong because the derivative of cos(x) (position) is -sin(x) not sin(x) … Let me know if I'm wrong.” That’s correct, I forgot a negative sign, that is all it was. However, it made the velocity graph incorrect, which is unacceptable.
gg
Flipping Physics is okay
I dream to be a teacher like you. You are the best. You are my idol.
coming in clutch for the exam thursday, all physics students thank you for your contribution to this earth, you are amazing
Thanks for the love. Best of luck tomorrow!
you are awesome . one of the best physics teacher on youtube...simple and clear...
I also like how you just save time by speeding it up which is being wasted in writing and which eventually make the lectures near 40 min long.
Glad you appreciate my work!
Seriously, thank you so much. I've learned more in 12 minutes than I have in a week. You really break it down and make it easy to understand concepts that usually fly over my head. Exactly what a teacher is supposed to do. I hope you continue doing this. I can tell you put so much effort into these vids. Again, thank you.
I will do my best to continue to make these videos. Thanks for the love!
27 minutes before the exam and I crammed your entire review playlist, let’s go
How'd you do? I'm nervous lol
My teacher is braindead and hasn't even started electricity when the test is this tuesday. Thank you so much.
+Partyday Bummer and you are welcome.
Partyday that happened to me and the test is in like an hour and a half...
We were start torque in class when I took my test this year... my teacher is retarded
I have the online exam in a week and a half and your channel is probably one of the best studying channel in any subject. Thankfully, waves and electricity are not on this year's exam, although I only have 25 and 15 minutes for questions 1 and 2 respectively. Thank you for the assist Mr.P, Billy, Bobby and Beau!
The Hobbyist yep
I’m watching your videos and I’m like yea, I’m totally failing my AP physics exam.
Did you fail?
what happened
@@raphaeladuamah9216 bro i'm asking the same thing
These are the greatest videos. I really appreciate these.
+Haley Morris especially the night before the exam :))
+Catherine Bennett Even better if you use them consistently all year. Good luck today!
+Flipping Physics we have been watching them in class every day this week haha my mind is a sponge. THANK YOU
Hey, i really like your videos and they are really helpful!! I've been struggling a lotttttt in my AP Physics class, but your lectures make perfect sense and you really simplified the problems!! You deserve one million subscribers!!! :DDD
+Erica Hu Thanks!!
I'm voting for Donald Trump
These videos are amazing! I saw the time lapse video of making a Flipping Physics video, and I just have to say thank you for dedicating so much time and energy to wayward physics students like me! XD You're a physics genius and an editing genius!
You are welcome. Perhaps my videos help tame your waywardness?
Thank you so much! Although I am an IB student this actually helps me reviewing everything again! I didn't remember physics could be this interesting and fun!
+Alicia Smith "I didn't remember physics could be this interesting and fun!" I am glad to be able to remind you!
thank you so much for this video and all your other review videos in the playlist. just studied more physics in 2 days than the entire year for my mock ap exam/ final exam tomorrow. wish me luck
Best of luck on your exam / final exam tomorrow!!
Your class is smart asf.
Still got about 16.5 hours until the exam. 😅its fine
got mine in 5 hours.
I'm mad I didn't find this account until the day before my physics exam but thanks for the help before I'm taking it!! Will check back in tomorrow
Please share with others so they don't also wait till the day before the exam to find my videos. Enjoy the exam today!
This was amazing!
Thank you so much.
I can’t thank you enough for your videos. They are so helpful and so well done.
You are very much welcome. Keep on learning!
3 hours before 2016 AP Physics exam
+mohammed ali shaaeli what hapen there bro
+Andres Arburola nothing crazy
Just another test
It didn't work that hard and I think I'll get something around 3
how did it go
Isaac A i got a 3.
I signed up for the AP course 5 weeks before the test.(foreign student starting in the U.S.)
Oh ok, good job bro!
Im really grateful for you and ur hard work put into these videos! I applied for a job this summer and if I get it, the first thing I want to do is give 20 dollars to you from my first paycheck for all the efforts you put into these!
Thank you so much! You’re amazing man
That would be absolutely lovely. Thanks!
And best of luck on the exam!
Did you get the job?
Great video! I love using your videos with my AP class. Thanks for what you do!
You are absolutely welcome. Thanks for using my videos to help your students learn!
I'm watching all your videos in loop for my AP exam tomorrow
Sounds kind of creepy.
Im so happy with this video, really helping in my preparation for ib exam 2018!!!!!
2018? Wow. Good luck!
You're such a legend! You make physics make sense!:)
+Gio Marquez Awesome comment. Thanks!
Thank you for the explanation. It is much appreciated
You are very welcome.
These videos are awesome, they help a lot. Thank you !!
+Juan Dos Santos You are welcome. Good luck today !!
After 4 months, I watched EVERY single AP Physics 1 video in your playlist & Website. I have taken notes for nearly every video. You became a regular part of my day, and your teaching and enthusiasm and your righteousness like donating to charity is so amazing. I couldn't have asked for a better teacher. I wish to major in physics, so I used your teaching material to learn and grow, and next school year I'm taking AP Physics! You are my first step into this field, and I can't wait to try new problems and eventually learn Mechanics and E&M from you. Your effort on this channel is amazing, and I love your style of teaching. I loved Billy, Bobby, & Bo and I miss the swing reverse and you fading away at the end of each video. Can't wait for what I'll do next with physics
That is one heck of a feat my friend. I think that's almost 40 hours of videos. I am impressed. I would say you are very ready for AP Physics next year! I look forward to hearing from you after you have done my calculus-based physics videos!
watching this litterally 13 hours before my exam, im just terrified of wave graphs those things give me nightmares
teaching myself all of physics 40 minute before the exam
Same
3 MORE DAYSSS AAAAAA
you and me both buddy
its been 2 years, how'd you do?
Good work :) Flipping Physics I'll see if I can catch you another time haha
God bless you brother! You make Penn State Main's physics much more bearable!
You are welcome! Thanks for the love.
I love your videos! Do you think it will be useful to memorize the position, acceleration, velocity, and Energy graphs for SHM?
No, I do not. The exam is "open note". Just have those printed out and easily accessible.
@@FlippingPhysics Thank you so much! I will make a note of them! Having the graphs are so helpful. I noticed the connection especially in #2 of the 2020 Sample Questions that CB just released. Once again, thanks for these awesome videos!
thank you 👍
the concept of three students helps remembering the information
Yeah for sure, I have it tmr and this is really helpful
Glad to help!
These videos are incredible. thank you!
Glad you like them!
This is amazing. Thank you!
Gotta harmonic rest tomorrow didn’t understand the unit, this helped me :’)
Great. Enjoy your harmonic rest. Sounds lovely!
I'm watching this exactly 1 hour before my exam
will you please show me how to derive the period in terms of thetha ,length of spring and g....please!
It takes the background of Differential Equations to know how to derive this from the equation of motion. This is a typical example of a problem in this class that you learn to solve about a third of the way through the semester.
The period also doesn't depend on the length of the spring. For a pendulum, it does depend on the initial position theta0, but that is a second order effect. In introductory physics, you usually stick to the small amplitude pendulum, where you approximate sine(theta) = theta, such that period is independent of amplitude. Given an amplitude 22 degrees and less, you'll have no more than a 1% error. It cannot be solved in closed-form for the large amplitude, and requires using an infinite series.
Knowing the solution in advance, I can show you how to work backwards with this problem, and show why the sine wave is a solution to the differential equation.
You can derive from Newton's laws that the equation of motion takes the following form. And this is the case of any example of simple harmonic motion.
x"(t)+ K*x(t) = 0
The K is not necessarily the spring constant. Although in the mass-spring example, K=k/m. In the example of a pendulum, replace x with theta, and K=g/L, and you have the small angle approximation for the equation of motion of a pendulum.
x"(t) indicates acceleration, the second derivative of x relative to time. x(t) indicates position as a function of time.
The two equations that can solve this differential equation are sine and cosine, centered around x=0, both with the same frequency. Set up a linear combination of sine and cosine with an arbitrary constant in front of both. Assign w as the coefficient in front of t, and assign A and B as amplitude coefficients of each wave.
x(t) = A*sin(w*t) + B*cos(w*t)
With trig identities, you can show that this is an alternative way to express it:
x(t) = X0*cos(w*t + phi)
Take the first & second derivative.
x'(t) = A*w*cos(w*t) - B*w*sin(w*t)
x"(t) = -A*w^2*sin(w*t) - B*w^2*cos(w*t)
Factor out -w^2:
x"(t) = -w^2 * (A*sin(w*t) + B*cos(w*t))
Notice that x(t) is inside x"(t), and therefore:
x"(t) = -w^2 * x(t)
And you can show that this satisfies the original equation of motion:
x"(t)+ K*x(t) = 0
-w^2*x(t) + K*x(t) = 0
Solve for w, and we get:
w = sqrt(K)
Does this look familiar? This means that the angular frequency is equal to the square root of the factor in front of x, in the equation of motion.
By definition of the radian, there are 2*pi radians in a full cycle. Thus to get the Hertz frequency f, we divide w by 2*pi. Take the reciprocal of f, and get period T.
Thus:
w = sqrt(K)
f = sqrt(K)/(2*pi)
T = 2*pi/sqrt(K)
@@carultch thanx very much sir ...you the best!
Tysm! I understood the graphs thanks to this video!.
Ywsm! I worked hard on those graphs; glad to know they are helpful.
I'm in a college calculus based mechanical physics class right now and a differential equations class. Although this material is strictly about the AP Physics exam, I still find the material helpful. It doesn't look like Calculus is used in the AP curriculum, which makes it difficult for high school students I believe. A lot of these quantities come from derivatives. Second order differential equations can be used to model the spring-mass system. Anyway, great videos!
Calculus is not used in the AP Physics 1/2 classes, however, the AP Physics C classes do use calculus. flippingphysics.com/calculus.html I do agree that the physics makes more sense using calculus, and I also think the reverse is true (calculus makes more sense with physics!). Glad you find my videos helpful.
Thanks man, very useful
The graph is in radians since f is in units of 1/radians, and when you multiply f by something in units of radians, you get some # that isn’t a multiple of pi... so that means the units of graph are radians (cos(kx) is usually acknowledged with radians) right?
Please watch this: www.flippingphysics.com/shm-position.html
You are my HERO
thank you! Can you make a video on how to answer QQT and paragraph argument
Currently working on it. Hoping to have it done by the end of the week.
Flipping Physics sounds great thanks for everything, just finished watching all your review videos and made a one page study guide !
In case you missed it: ua-cam.com/video/UTKkOO0eW5o/v-deo.html
Flipping Physics I’m back!
Quick question - what are the thermodynamics laws?
thank you so much!
Great video
i’m cramming
I can honestly say this video helped me understand so many concepts of SHM than a week of class did.
Well, then I am glad you found my videos!
These are amazing!
Thanks!
just wanted to ask a question about the velocity of the mass, as it starts from position 2 to mean position 1 , does the velocity increases when moving toword mean position 1, if so how can how can we say the accerlation is maximum even though we know that when we first let the mass, it is initially at rest, so body moving from rest at position1 should move with positive acceleration. Where as we say acceleration of mass decreases moving from position2 to position1 .
+muhabbat Khan I'm not really sure what you are asking, however, I bet the answer is in this in-class lecture video: ua-cam.com/video/Lvtl1VRUBFg/v-deo.html
Three years late, but I am confused on one part of the video
Regarding simple harmonic motion in terms of circular motion, you drew a graph of the position of the object. Along the vertical axes there is a A+ and an A- which I am assuming signifies amplitude. However, you also stated that amplitude is equivalent to the radius, which is always constant. How can the amplitude change according to the graph if it is always constant given that it is equivalent to the radius of the circle?
This is a review video. If you want to understand simple harmonic motion better, I suggest you start here: www.flippingphysics.com/shm-position.html
@@FlippingPhysics Hi, thank you for the reply! But I don't think it answers my question regarding the video
Is there a reason why the displacement of the block on the spring is measured from its point of connection to the spring, and not by its center of mass?
Traditionally it is measured that way because the location of the equilibrium position would be independent of the size of the block which is attached to the spring. However, as long as you are consistent and clear with your solution throughout the problem as to where you have defined the location of the equilibrium position, identifying the equilibrium position at the center of mass of the block attached to the spring should be fine.
That makes a lot of sense. Thank you!
Midnight before the exam 😢😢
1 hour before the exam 😃
Hello! Just wondering, based on the velocity graph you demonstrated, wouldn't acceleration be negative between Position 1 and 2 since the slope of the velocity graph is negative between Position 1 and 2 or x=0 and x=pi/2? I was just wondering since the thumbnail shown within the video says the opposite if this is the case😅👍
Sorry, your question confuses me. The graph shown in the video shows the acceleration to be negative between positions 1 and 2. So....?
Flipping Physics Oh I was wondering why the velocity graph shows the acceleration to be negative between Positions 1 and 2, but yet the thumbnail picture (which was shown in the video) shows acceleration to be positive between Positions 1 and 2. Should acceleration be negative regardless on this interval?
12:38 AM at night with my ap physics exam at 3pm, late night cramming- best way was to use the one and only physics jesus' videos
Why is the velocity 0 at the ends as it is changing direction, so the velocity should be non-zero. No?
And why is it maximum at the equilibrium position where a=0?
I explain that in more detail in this video: www.flippingphysics.com/shm-force-acceleration-velocity.html
will you be doing AP physics 2 review?
+Mrdubstep484 Sorry, however, I have to plans to make AP Physics 2 review videos. Paul Anderson has a bunch of AP Physics 2 videos you could check out. www.bozemanscience.com/ap-physics-2-video-list
very helpful video. btw i love your hair.
Glad it was helpful.
God bless your soul
Thanks for the love!
We can project 'uniform' circular motion as harmonic motion which is 'non-uniform'. How is it possible?
yes, viewing uniform circular motion from the side makes it simple harmonic motion.
Imagine an object resting on a record player. Viewed from above the object moves in uniform circular motion. The tangential speed is uniform, the centripetal acceleration is uniform, the radius is uniform.
Now view the object from the side. Now you only observe the motion of the object in one direction, which is not uniform.
This website has a good visual of this. eng.mu.edu.tr/~tugrul/g_phys1/lecture_notes/oscillations/page7.html
Look at the first animation.
I totally need to make a video of this at some point.
Why isn't the acceleration graph linear? Isn't a=kx/m where m and k are constants? If so the equation is of the form a=Cx which is linear
I guess that the velocity graph is sinusoidal and the derivative of velocity is acceleration. So bc the derivative of sine is cosine it's not linear.
I believe acceleration is linear with simple harmonic motion such as a horizontal-spring-block-frictionless system and becomes curvy when dealing with simple harmonic motion pertaining to circles
Not sure if you're still wondering about this, but the reason his graph is not linear is because the x (independent) axis is theta, not x. Theta is linearly proportional to time, so you're seeing how the acceleration varies with time. If he had plotted a vs. x, it would be linear like you said.
how would you find where the kinetic energy is the equal to the potential energy in the spring because it isn't halfway between position 1 and 2 or 2 and 3 if i remembered correctly?
edit: grammar
"find where the kinetic energy is the equal to the potential energy in the spring"
Set the equation for kinetic energy equal to the equation for elastic potential energy. Substitute in velocity and position SHM equations. Solve. I bet it is kind of tricky. Probably going to end up with the tangent of angular frequency times time plus the phase constant, take the inverse tangent and solve for time. That is the time at which KE and PEe are equal. Then you can plug the time back into the position SHM equation. That's my best guess without actually working it out. Hope that helps.
well, exam is in 2 hours. Time to get a 1 lmao
wooooooow!
ap physics 2020 is in 3 hours
bro. why u take restoring force (f)= k.x ..... as we know f= - k.x ....... a minus sing will come .....
I have used the equation which is on the AP Physics 1 equation sheet provided by The College Board. I actually prefer the force of the spring equation with the negative sign in it.
About 10 hrs left
thanks for such best explanation ...... but i notice at starting that u bought only two-two pair of shocks and adjust for three men ......
omg this is better than my teacher but test is in 13 hours ugh
You are welcome. Thank you. And good luck today!
Crunch time 😅
+Glenn Orpiano ditto
Fliiiipiiing phyiiisiiiics
Sing it!
Hour and 45 minutes
once again... EXCELLENT!!!.. in every respect!!.. I'd tell you to get a HAIRCUT but my Hair is just as long!! LOL.... Peace BROTHER!! lol Physics RULES...
I'll get a haircut in about 2.5 years.
26 minutes
I hope it went well.
my friend has a crush on u my guy
1 hour left 😂
😭😭😭
I have 20 minutes 😐
My AP Physics teacher can not teach.
I am sorry you are not getting the education you feel you deserve. My hope is that my videos can help bridge the gap.
@@FlippingPhysics Yes your videos helped a lot. My physics teacher except us to just know this instead of helping us go through the process of knowing this for our exam. Similarly, he does not put in any grades or any work we do so we don't know what's are grade currently.
Any chance you could help me out by doing what I ask people to do in the following video? bit.ly/2y4tOCA It would be a great way to show your appreciation!
Really informative BUUUUT I hope you could talk slower next time, maybe? Nevertheless, thank you for this video!!
FYI: All of my videos are closed captioned which can help if you think I am talking too quickly...
2020 ap physics is bs ahahahaha
you look like David dobrik
Z
baqwaas
I'm voting for Donald Trump
3 days before ap exam lets go