Work-Energy Formula Sheet: bit.ly/408Zp51 Physics PDF Worksheets: www.video-tutor.net/physics-basic-introduction.html Full-Length Videos & Exams: www.patreon.com/MathScienceTutor/collections Direct Link to The Full Video: bit.ly/3vFF9r4
it took you like 10 seconds to explain why does the trolley have potential energy meanwhile my physics teacher couldnt through the whole semester. You're amazing
Bro I have a physics test tomorrow, through out my education I have been listening to u I got the highest result of my class for the whole year believe it and I want to tell u how much I appreciate it keep it up.
It's funny how most comment sections for youtube videos die out as the video ages but that doesn't happen with these videos becuse they keep there relevance as there are always new students coming to learn the same stuff
I think everyone will understand better if you use this eq for the last problem : m g Hc +1/2 m Vc^2 = m g Hd + 1/2 m Vd^2. You thought me so well. Thank you so much
👏👏👏👍✌ This lesson took me about a week to complete. It didn't happen. I tried so many things except watching UA-cam videos. Then I decided to watch a video. This was the day before the worksheet for my physics. Thanks, bro. I'm confident I'll do well on my physics tomorrow.
In the first question it states that the box slides down 150m inclined plane. I noticed when you went to plug in your number for height you used the 150m; would you not use 150m as the hypotenuse in order to solve for the height?
Just started watching your videos from a recommendation for my physics class and I love how you explain things so simple but thoroughly! fyi has anyone ever told you that you sound like Mark Wahlberg? (x
I have a request. While adding new videos, please do that in context of an existing (or, if necessary, newly created) playlist. It becomes difficult to keep track of randomly uploaded Videos which respectively fall into several random categories (unless sorted) and searching them manually to discover which video is on what topic is not efficient. Feedbacks appreciated. Thanks.
For number 3 its easier if u just use the the final velocity you get from part a and use it as the initial and the work equation is now Initial Kinetic=Final Kinetic + work done by friction
Just wanna double check my understanding, but is the work done by friction equivalent to heat/thermal energy? Since heat energy is energy lost from the total mechanical energy?
@@rataulesego2052 g = 9.8m/s^2 but in projectile motion for the equations a = -g is taken because the gravitational force creates an acceleration downwards for an individual object, think of g and a as two different values which coincidentally has the same numerical value with different directions
For the first problem, you solved for V final incorrectly. The 1/2 should go the left hand side multiplying with 2 which would become 4 2gh = 1/2v^2 4gh = v^2 v = √4gh since √4 =2, v = 2√gh two has to be outside of the square root
i got a D. good luck guys, and here’s a tip, don’t ignore thermal energy problems even when your instructor doesn’t go over it at all -_-. oh and make sure you know all your conversions and don’t mess up sig figs
Work energy theorem is better than it I always use WET Because it is easy and if friction is given than we can't find potential energy of friction by mechanical energy conservation
Hello! I just had a question about number 6. For number 6 part (b) it said to find how high is point C relative to point B, but I think you found it relative to point A?
Hi, I just wanted to help out. I think it doesn’t matter in this case because the height at point B is 0m. 29.57-0=29.57. So you can calculate the height of C with A. You could also do calculate with B if you wish (using kinetic energy) and you should get around the same answer.
@@TahaElAmineHaddouche You assume E1=E2 when E1 is mgh when the object is at rest at the beginning, and E2 is (mv^2)/2+mg(2r), and solve for h. The velocity in E2 is the critical velocity that the object needs to have (at the very least) to continue in a circular motion and not drop off midway. The critical velocity is measured by the square root of the acceleration due to gravity (a=g=10m/s^2 in the Earth's case) times the radius of the circle. If you want I can send you a picture of the calculation.
Ok, so quick question why is it that when it is frictionless you are removing all of the m in question 4 but when it is friction you are plugging in the values for m?
He can take m as a common factor on both sides and cancel it out if there’s no friction, for example mgh = 1/2mv^2 (the m’s go). But if there’s friction since m is not a common factor he has to include it, like mgh = 1/2mv^2 + W (m can’t go). Hope this helps.
At 6. question part b there is h right? So mgh will end up 0? but if we use 1/2*m*v^2 we can have values? idk shit bout physics just i didnt get it wtf
You're talking about the number of energy lost. Technically, it is correct to say the positive number. For example, you can say "I lost 30 dollars gambling yesterday" or "My back account has -30 dollars/my account went 30 dollars negative" so you can say energy exchanged/gained was -1350 or 1350 was lost
هل تؤمن برسائل الله لك؟! هذه رسالتك اليوم 💛 "يُدَبِّرُ الْأَمْرَ" نعم..سيدبِّرُ اللَّه أمرك ، ويعتني بشؤونك ، ويكشف عنك غمامة الحزن ، ويسخر لك من تحب ، ويفتح لك أبوابًا مغلقة ، وسيعوِّضك عن ما كان فقدُه يؤلم قلبك فقـط تفائل بمـا عنـد اللَّه 💛
How I would think about it is the work done is positive because the force and distance are in the same direction, which equals the change in KE. There are no opposite vectors to make a negative change in kinetic energy in this problem.
There is no kinetic energy in a moving mass there is force Mv squared kinetic energy is the energy of consistent work from a consistent force regards Graham Flowers
This was months ago so you prob figured it out by now, but in case someone else has this same question, gravity is independent of the path taken, think of it as always pushing down. So whether you are going sideways or not has no effect. Since gravity is the only force playing a role in how high up the hill it will go, the angle does not affect it.
Work-Energy Formula Sheet: bit.ly/408Zp51
Physics PDF Worksheets: www.video-tutor.net/physics-basic-introduction.html
Full-Length Videos & Exams: www.patreon.com/MathScienceTutor/collections
Direct Link to The Full Video: bit.ly/3vFF9r4
it took you like 10 seconds to explain why does the trolley have potential energy meanwhile my physics teacher couldnt through the whole semester. You're amazing
.😂
True... He's amazing
🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
it's crazy that i you probably aren't even exaggerating
Bro I have a physics test tomorrow, through out my education I have been listening to u I got the highest result of my class for the whole year believe it and I want to tell u how much I appreciate it keep it up.
Bro said “believe it!” Like naruto
habesha is here
@@mikane0 I read that part in naruto's voice lol
have a phys test tommorrow on a unit i completely blanked out on, your vids are short and easy to comprehend, a lifesaver!! :D, ty
shorrrrrrt?
there's no bigger shortcut for this type of topics
This is epic. I have a midterm tonight and this is exactly what I needed.
You happen to go to penn state ?
@@ianfrancis5905 I do not. I go to UC Berkeley.
@@williamshiflet538 physics 8A or 7A?
@@JH-hb5cc this was for 7A. Just finished my second midterm for 7B tonight.
@@williamshiflet538 oh lol, I’m in physics 8A
I have like 20.mins b4 my physics unit teat, ur saving me rn
how did you do?
i have 9physics assignments to finish in 20 hours and this is saving me from a breakdown
How on earth do you have 9 physics assignments due?
@@xrecon18 her teacher assigned 9 physics assignments
@@nowlun Bloody hell... that’s torture 🤣
TRUMP 2024
@@xrecon18 I have 26 rn :(
It's funny how most comment sections for youtube videos die out as the video ages but that doesn't happen with these videos becuse they keep there relevance as there are always new students coming to learn the same stuff
I can't remember how many times you saved me, you are a legend, I want to meet you in real life for real
I think everyone will understand better if you use this eq for the last problem : m g Hc +1/2 m Vc^2 = m g Hd + 1/2 m Vd^2. You thought me so well. Thank you so much
I used that equation and got a different result I've been trying to understand why :(
yeah insetead of writing Vc he Wrote Vf which give a differet results
👏👏👏👍✌ This lesson took me about a week to complete. It didn't happen. I tried so many things except watching UA-cam videos. Then I decided to watch a video. This was the day before the worksheet for my physics. Thanks, bro. I'm confident I'll do well on my physics tomorrow.
How did it go🎉
Thanks a lot, I’m taking AP Physics 1 and this is what I need.
What textbooks do you use?
did you pass (the class and test)and if so how
I love this person and their explanation of physics!
In the first question it states that the box slides down 150m inclined plane. I noticed when you went to plug in your number for height you used the 150m; would you not use 150m as the hypotenuse in order to solve for the height?
Thank you so much, hope this help me pass my final
Dude you magician, the day before my conservation test?
ua-cam.com/video/bdbDV-CBiLo/v-deo.html
Just started watching your videos from a recommendation for my physics class and I love how you explain things so simple but thoroughly! fyi has anyone ever told you that you sound like Mark Wahlberg? (x
Bro Ur too good
I like your explanations. thank you bro. keep making more videos.
for the last question is answer 37.5 m
This is really helping!! Thank you so much!
I rate this guys super clean
I love when he said "the kinetic energy is very low. Let me make sure that's right. And yeah that's it."
I'm so sorry for asking this Mr. JG, should we add those Kinetic energies or subtract them since the objects are moving in different directions?🤔
I guess since is an elastic collision so we had to add
its kinetic energy, it is v^2 so it does not matter whether velocity is negative or not, the result is a positive ( i'm not sure)
Im a 9th grader, but the fact that you teach these so simply. It even helps me even though this stuff is for higher grades... Thans a lot!
@@royinnoce2349 huh?
@@Lordcoby simple are the graphic stuff but the math aroubd it impossible lol
@@rodokmen1300 how is this math impossible
lol are you a senior now
may god bless this man’s soul for all eternity🙏🙏
Thank you for the video!
Thanks
U didn't like the vd buh commented....
@@yuri_black_zero what
thankyouuu🖤
I too now pronounce object and product as objec and produc thx to you bro!😅
Literally I have addicted with your voice
I have a request. While adding new videos, please do that in context of an existing (or, if necessary, newly created) playlist. It becomes difficult to keep track of randomly uploaded Videos which respectively fall into several random categories (unless sorted) and searching them manually to discover which video is on what topic is not efficient. Feedbacks appreciated. Thanks.
@Lee-Anne Stevenson I don’t know what you mean. Anyway, is that accessible to just anybody?
I just subscribed to your patreon and I can find the full video of this
Physics is cool.
Absolute life saver thank you ❤
For question 3, part B; why is the work of friction not negative?
The work of friction it is negative at the part (A), PE + KE - W = KE. But when it comes to the part (B), it becomes positive. PE + KE = KE + W.
For number 3 its easier if u just use the the final velocity you get from part a and use it as the initial and the work equation is now Initial Kinetic=Final Kinetic + work done by friction
Your voice makes me relax😌😌✋
16:28 How we can say that KE = Thermal energy ?, doesnt some of the KE will be converted into sound energy ?
tqsm
This helps so much, thank you
For the last problem that you need patreon access for, is the answer 37.49 meters?
Just wanna double check my understanding, but is the work done by friction equivalent to heat/thermal energy? Since heat energy is energy lost from the total mechanical energy?
Thank you!!!
Great video
You have literally saved my life
this is a really good video!
Physics test in 2 hrs
15mins
I deff failed that
Edit: apparently my teacher couldn’t find my test so I retook it and got a 93. God is good.
@@Findgod222damn got one tomorrow
I got one in an hour
Have one in 20 minutes!
I got 85/100 because of You !!!!
Gravitational constant has always been 10 in my school, please can you tell me why you used 9.8?
Pa unza aba bena teti bakwanishe
Hi. Can I ask why the 9.8 does not include negative like in projectile motion?
@@rataulesego2052 g = 9.8m/s^2 but in projectile motion for the equations a = -g is taken because the gravitational force creates an acceleration downwards for an individual object, think of g and a as two different values which coincidentally has the same numerical value with different directions
I have 12 physics numericals to finish thanks it helped me a lot 👍
Btw icse syllabus is tuff
finally someone who understands my feelings lmaoaoa
@@TrueXD_ lmaoaoao bro u india ?
@@cricketfans207 yes
@@TrueXD_ lol
At 15:18 , will the 12 kg block also coul create sound energy , so will some of the energy be wasted
are we supposed to neglect sound energy in those collision problems??
My mans just saved my grade
Legend!!!
THANK U FOR YOUR SERVICE SIR
Physics final in less than an hour 😂, thank you
Thanks!
GOAT.
For the first problem, you solved for V final incorrectly. The 1/2 should go the left hand side multiplying with 2 which would become 4
2gh = 1/2v^2
4gh = v^2
v = √4gh
since √4 =2,
v = 2√gh
two has to be outside of the square root
simply incorrect, pe=/=2mgh... pe=mgh.
I have mid exam next week so what I do
watching this helps me not feel pain even though I don't know how to solve because I dont know the energy formulas
Thank u avogadros number
Love this
will let you guys know how my retake goes i watched a lot of these
update??😭😭 how’d it go??
i got a D. good luck guys, and here’s a tip, don’t ignore thermal energy problems even when your instructor doesn’t go over it at all -_-. oh and make sure you know all your conversions and don’t mess up sig figs
Work energy theorem is better than it
I always use WET
Because it is easy and if friction is given than we can't find potential energy of friction by mechanical energy conservation
Hello! I just had a question about number 6. For number 6 part (b) it said to find how high is point C relative to point B, but I think you found it relative to point A?
Hi, I just wanted to help out. I think it doesn’t matter in this case because the height at point B is 0m. 29.57-0=29.57. So you can calculate the height of C with A. You could also do calculate with B if you wish (using kinetic energy) and you should get around the same answer.
@@zs1175 Ohh that makes sense! Thank you so much for the clarification I really appreciate it :D
This was super helpful thanks
Wowwwww Sir wowww....no words
I am also from ETHIOPIA
@@AbCd-ko5elo really isn't he cool? from which school n city?
@@annahwanet767 he is jack of all trades. I'm from ETHIO PARENTS SCHOOL
@@AbCd-ko5el Let's cheer 4 him....o cool um from Cathedral school
@@annahwanet767 interesting how is life in cathedral ?
Did anyone else do the last question before the video cuts off? Is it 37.5m if you assume g=10 (and not 9.8 as he usually does)?
Yeah, I got the same answer. I just plugged the square of speed straight into the equation (g=9.8)
can you explain how you got the answer , please ?i feel like i am missing something
@@TahaElAmineHaddouche You assume E1=E2 when E1 is mgh when the object is at rest at the beginning, and E2 is (mv^2)/2+mg(2r), and solve for h. The velocity in E2 is the critical velocity that the object needs to have (at the very least) to continue in a circular motion and not drop off midway. The critical velocity is measured by the square root of the acceleration due to gravity (a=g=10m/s^2 in the Earth's case) times the radius of the circle. If you want I can send you a picture of the calculation.
Bro in question num 2 , why did not u use Kinetic spring ( KE spring) to the equation?
ke spring is equal to kinetic energy so its the same thing
why did you multiply by 2 in the 1st question
On number 3 part b, why is it that the work created by the friction is positive? Isn't it negative since it opposes to the motion?
Ok, so quick question why is it that when it is frictionless you are removing all of the m in question 4 but when it is friction you are plugging in the values for m?
He can take m as a common factor on both sides and cancel it out if there’s no friction, for example mgh = 1/2mv^2 (the m’s go). But if there’s friction since m is not a common factor he has to include it, like mgh = 1/2mv^2 + W (m can’t go). Hope this helps.
5:52
WHERE WAS THIS WHEN I NEEDED IT FOR MY TEST SHXJSBXNBDX
for question 3 part A i got 64.8 m/s.
At 1:43, how did you get the 9.8 Sir?
it's constant g (gravity) = 9.81m/s^2
@@yanyan5195 Thanks my man
I Need a big gyat for me to focus on physics
At 6. question part b there is h right? So mgh will end up 0? but if we use 1/2*m*v^2 we can have values?
idk shit bout physics just i didnt get it wtf
Please make a video on gluconeogenesis pathway.. A BCH student in need.. Thank you
can someone explain why problem five the second car does not have a negative velocity ? if it is moving in the west direction
Although it wasn't specifically said, the problem seems to be implying that it wants the TOTAL thermal energy.
16:37 why nor negative 1350? since this is the energy lost.
You're talking about the number of energy lost. Technically, it is correct to say the positive number. For example, you can say "I lost 30 dollars gambling yesterday" or "My back account has -30 dollars/my account went 30 dollars negative" so you can say energy exchanged/gained was -1350 or 1350 was lost
4:49 We can also do 1/2 kx^2 = mgh for the right? coz 1/2kx^2 = 1/2 mv^2
the question 3 your final equation were did you get 2ad.
10 finally
هل تؤمن برسائل الله لك؟!
هذه رسالتك اليوم 💛
"يُدَبِّرُ الْأَمْرَ"
نعم..سيدبِّرُ اللَّه أمرك ، ويعتني بشؤونك ، ويكشف عنك غمامة الحزن ، ويسخر لك من تحب ، ويفتح لك أبوابًا مغلقة ، وسيعوِّضك عن ما كان فقدُه يؤلم قلبك
فقـط تفائل بمـا عنـد اللَّه 💛
hmmmmmm
in 16:00 isnt the energy negative, since it's the variation between the final KE and the initial KE? the final KE would be 0 and the initial, 1350J...
How I would think about it is the work done is positive because the force and distance are in the same direction, which equals the change in KE. There are no opposite vectors to make a negative change in kinetic energy in this problem.
in problem no.5, TKE=KEa + KEb. Since the car B is moving to the left, do you think that should be negative??
no because the question is asking for the total thermal energy produced. Therefore direction has no play, only magnitude.
There is no kinetic energy in a moving mass there is force Mv squared kinetic energy is the energy of consistent work from a consistent force regards Graham Flowers
ok, so for problem 7 i got 37.59 m. How far was i?
please , can you explain how you got the answer ?
🔥🔥🔥
7.54, 4064 where come from?
On question 2, how does the angle of the hill not affect how high it will go?
This was months ago so you prob figured it out by now, but in case someone else has this same question, gravity is independent of the path taken, think of it as always pushing down. So whether you are going sideways or not has no effect. Since gravity is the only force playing a role in how high up the hill it will go, the angle does not affect it.
@@malekhaddad5860 hello
@@saf8637 hello
For example 5 why did we not indicate different signs since the cars are moving in opposite directions??
How come on a slant with an angle there is only potential, but when it’s a hill it’s potential and kenetic on the left side?
how would you solve the third exercise without h?
@Justin Shayne recommended me to you dear sir. You are a fish.
Physics test in 30 mins
$20 for the full video! Jeeeeeez.