impulse examples///Homemade Science with Bruce Yeany
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- Опубліковано 4 лип 2024
- Here are a few ideas that can help demonstrate how the amount of time that an accelerating force or a decelerating force is applied to an object will affect it's rate of motion. The result of force and time is an impulse.
Homemade science is a collection of classroom tested ideas, suggestions, projects, and experiments that I have used in teaching physical science for the Annville-Cleona school district in central Pennsylvania. I am currently in my 38th year of teaching. My intention is to share these ideas with other teachers or anyone who has an interest in science. I have found that designing and building my own equipment has taught me more than any course that I have ever taken. I hope that you consider trying this for yourself.. I also share and show some of these ideas at workshops, science conferences, or inservice presentations.
Thank you so much
your students are surely lucky to have a teacher like you.Bet they remeber the concepts for a long time
I Love it that he still giggles doing the experiments, he loves his job.
Most underrated legend.
Bruce. Your explanations are awesome. I would have love it to see you 20 years ago when i was studing phisics and engineering. You make difficult things make it easier. Thanks for sharing your knowledge and experience!
thank you
virginia dal castene agree. would have LOVED Mr. Yeany as a teacher when I was in school! So much more can be learned by his hands on teaching methods than by reading chapters out of a textbook. I am envious of his students!
virginia dal castelll
CJ G llp
I'll use this ideas on my class!
I was very frustrated this year, my class - first time this happened to me! - said that I was unable to explain things and just threw stuff on them. Thanks for the ideas!
if you were a my teacher. but my badluck. i had been looking for this kind of a teacher all my life. thank god i find you now. May God bless you sir. Thanks for making this much effort. Hats off to you sir. i hope, we see you always like this in more videos.
cutting paper tube to demonstrate is an amazing idea. This also can explain work and kinetic energy relation. Thank you for sharing!
Love your stuff!!! One of the ways the teach throwing is by dissecting the throw
Adorei... obrigado, professor!
Well done, as it is clear that students will learn impulses that will accelerate and decelerate heavy objects and the consequences involved.
While I admired the practical experiment I loved reading what is on the noticeboard at 7:12. I always preached that anyone doing a practical project, he or she would be covering the widest possible education including inspiration, concept, thinking and variation on diverse ideas , design, drawing, logic and art and movements and static requirements and then report writing and analysis and conclusion and if they are allowed to take the floor to explain their project they would be learning public speaking and deliveries and diplomacy especially if they need to defend their work when other criticise it .
Congratulations on your concept of teaching. Your methods should be imitated in all schools.
you, Sir, are awesome!!! :D
sir, u r awesome.All the videos u make r mind blowing.thank u
Thanks for posting this video and am going to try to use some of these examples in some online demos for my physics class. I may have my students watch your video!
This is why I subscribed to him :) I love this guys explanation in everything :)
These are great.
Lovely demonstrations !! Thank youu 😁
Excellent demonstration
I respect you a lot sir
Sir, you explanation is awesome. Sir you make Hard thing easy to understand.
Thank you
nice video ever on impulse
thanks
Great effort for srudents to understand the hard topics in easier way.
as always outstanding love and dedication from the professor,,, but it is not the length that really matters, it is the velocity with which the dart leaves the tube,,,,
Great explanation!
I like your way of teaching the subjects
Love from India🇮🇳
thank you, nice to hear from India
please keep doing videos
I love your channel
Another brilliant video. This is what school should be like for everyone. I wonder too what sort of baseballer Bruce is/was. Threw that egg like a pitcher but for all I know he's a second baseman or something. Would not guess outfielder but who knows really
Hi Louis, actually I was a catcher,
And a very shrewd one too I'm sure! Please keep making these videos, my partner and I love watching them even though we're adults
Your videos give me great ideas about how to teach my physics class, thank you
Glad to hear that!
Fantastic 👍👍
Great ideas
Muchas gracias.
Very good demo of Ft= m(v-u) . Cheap and doesn't require expensive data logger.
It would be cool if the length of the blow gun and the distance darts travel - would be shown in a graph.
I think that is an excellent idea but I think it needs something a bit more consist than blowing into it, also fixing the angle so it would be the same each time. I'll give some thought, if you have any ideas, give it a try and post it, I'd like to see this improved on
Option 1 - statistical analysis. It could be a normal probability distribution function. It could be weibull... But there will be a peak probability or another type of a "sweet spot" such as the "mean value". 10 shots per gun length? that's a lot of shots to be made... like a Montecarlo simulation...
Option 2 - a cannon. Spring loaded valve, constant pressure air tank and a variable angle of attack.
Groups of students could research either a given turret length (snipping a peace of the barrel in between groups).
The curves of all groups could be combined, making a 3D surface plot / function, which describes distance traveled, at an angle as function of cannon length.
The exam? To hit a target, using the data you have collected.
I'd love to see an air cannon made using arduino - selecting the angle using a servo motor, selecting the pressure using a bicycle pump. A solenoid trigger, perhaps. A user interface, where you can enter the angle you want using a computer? That would be an awesome project.
And a good game as well - the student would have to make his own "aiming chart" - to select the appropriate angle, at a given cannon length, to hit a target at a given distance... :D
Could calculate the probability of hitting a target as well - for bonus points (normal or other probability density function would be required)
If the thing was made bigger - they could shoot foam balls at each others houses of cards - competing can be quite addictive. Who-ever gets the better "data chart" is pretty much guarantied to win :D
The graph will be directly proportional (it will be a straight line with a positive gradient going through the point (0,0)). Since impulse = ft, as time increases with a constant force, impulse increases proportionally; when translated to this experiment time is the blow dart length and impulse is the distance traveled.
Well actually I think this may not be the case, since these experiments actually have a more direct relation with energy rather than impulse, since work is distance*force and impulse is time*force.
The parameter on the graph here is the length of the pipe rather than the time the dart spends in it.
As for the distance the dart travels being directly related to the impulse, I think that's actually true because the darts start from rest, making the impulse equal to their muzzle momentum, which is of course proportional to their muzzle velocity, and so if they all spent the same amount of time in the air, this would further be proportional to the distance traveled.
And since they all start out horizontal, they do in fact spend the same amount of time in the air, i.e. the time it takes for a free falling object to accelerate to the ground from the height of the pipe with no initial vertical velocity.
All of this, of course, ignores air resistance, significant for light projectiles like used here, and the time variation of the force experienced by the dart in the pipe, so in theory even the quadratic energy relation wouldn't model the results...
And then there's the assumption of zero error, but scientists always do that, and talk about error later.
Awesome! Thanks so much. Would you kindly let us know where you bought your darts?
I got them at a toy store, they came with a toy blow gun
Be interesting to see at what length the barrel has to be to until it has a negative effect at some length there will be no further benefit of the longer length but should at some point level out or lessen it's range
Can someone explain about the third way.... Isnt the impuls is the is J=Ft . The shorter the length of tube, the shorter the time. The shorter the time, the higher the impuls... So, why tube with short length, short time, and high impuls make the dart to travel in shorter distance??
Great
holy shit this was good!!
In the case of sheet and egg, Are the impuls give action reaction So that the egg doesn't break?
The reason the egg doesn't break, is that we stretch out the time it takes to slow it down to rest. This reduces the force needed to slow it down from rest. It takes the same impulse to stop it, as if you threw it at the same speed at a rigid wall. But the rigid wall would stop it quicker, requiring more force, which therefore would break it.
@@carultch thx
I wish you were my physics teacher
Is this the reason for lengthier barrel for sniper gun and military tanks.
yes
I really wish he was my physics teacher
The weight of the conveyor belt must cancel the force acting upon it.
00:51
Yea physics!
26th comment!
he is bruce wayne
I clicked expecting a shuriken