You'll find more dynamics problems at: www.spumone.org... Here is a problem where the pulley kinematics are not trivial. I demonstrate a recipe for working it out.
Пікірлер: 47
@JQuint_3 жыл бұрын
After 7 years, this explanation is still superb. Cheers!
@maxisjaisi40010 жыл бұрын
I'm a high school student from Malaysia. You seem to have a natural knack in teaching Physics. Your tone is not monotonous, I could watch the entire video without losing interest. And your explanations are very detailed, you do not pull figures out of thin air. You analyse them in detail. Keep making videos and thank you!
@altuber99_athlete2 жыл бұрын
This channel is a hidden gem.
@harmeetsokhi7 жыл бұрын
The part after 7 mins... The finest and simplest explanation I have ever come across for pulley problems....
@elthechieftain10 жыл бұрын
Now, You teach the exact same way I teach, detailed, and that makes the concept not only stick better but you'll learn even better yourself:) Thanks
@dominiqueengome50699 жыл бұрын
Thank you sooo much! This makes so much more sense than when I did it in class. It's a lot more detailed than what my professor did and now I can actually understand what he did! Thanks
@rajsondhi69129 жыл бұрын
a round of applause for you man, thank you so much
@MrDamours10 жыл бұрын
Ty! The rope movement explanation is very clear and helped me understand pulley systems!
@ADGPEN11 жыл бұрын
Heya im glad i found your video, the problem is nearly identical to what I need help with, (mine has different masses). Also, you scared me because the end was coming up and I had no idea what you were going to have to do to solve for acceleration... Thanks for the video
@venugopals96805 жыл бұрын
Great 👍 explanation. That change of rope segments explanation is ultimate. Thank you. 😊☺️
@Neo4real11 жыл бұрын
thanks...this helps during a last minute all nighter..
@toe399 жыл бұрын
I love how you draw the straight lines
@kingvkronaldo.92736 жыл бұрын
Excellent explanation.. especially the acceleration relationship was elaborated well
@bdcoller6 жыл бұрын
Glad it helped.
@MoonLight1102310 жыл бұрын
Thank you so much man. You are really an excellent teacher. Hats off to you Boss.
@bdcoller10 жыл бұрын
You're welcome.
@87VNP9 жыл бұрын
Much wow....thank you so much.
@mwont3 жыл бұрын
Awesome. Thank you so much for your help
@apeirostudio29935 жыл бұрын
You are a life savor bro
@bdcoller5 жыл бұрын
Glad to help
@jlpsinde5 жыл бұрын
Thank you, it's perfect at all levels! A great help, incredible awesome video!
@bdcoller5 жыл бұрын
You're welcome.
@tsoojbaterdeneharvard31874 жыл бұрын
Thank you so much.God bless you🙏🙏🙏
@bahadorrousta61063 жыл бұрын
thank you
@dk7aditya8 жыл бұрын
Good Explanation bro, Keep it up
@nitotech5 жыл бұрын
Dude your awesome! The constraint problem was annoying me.
@anushreedey54486 жыл бұрын
thanks.it's really helpful...........
@Allthingstech3108 Жыл бұрын
Lovely
@1993yaghi10 жыл бұрын
Great, thank you!
@ISLAMguidanceful8 жыл бұрын
quick question, on block number 1 there is a rope hanging from the pulley holding the block why dont you take that into account as well?
@bdcoller8 жыл бұрын
+Hussein Elsherbini In my free body diagram of that block, I included the pulley and the rope connecting the pulley to the block. Therefore, the rope connecting the pulley and the block are INTERNAL. When you write equations for Newton's laws applied to a system, one only includes EXTERNAL forces.
@ISLAMguidanceful8 жыл бұрын
in this case how do i come to recognize if i should include the whole pulley and the box or just the box. thanks for the response :)
@bdcoller8 жыл бұрын
+Hussein Elsherbini You can do it either way. But if you only include the block in the free body diagram, then you will have to draw a separate free body diagram for the pulley and write equations for it.
@noreaction14 жыл бұрын
What if the fixed plane where the rope and top pully are attached is at an angle and not perpendicular to the mass? How does that change the tensions?
@bdcoller4 жыл бұрын
I have a video of a more complicated pulley problem for which the blocks are on slopes. You can find it here: kzbin.info/www/bejne/boGVlolqYthsd6s
@hamzamisk157010 жыл бұрын
thank you so much but what's the name of the app you use in this video plz :D
@bdcoller9 жыл бұрын
For that video, I used a program called Smooth Draw. Now I'm using Autodesk Sketchbook Pro.
@hamzamisk15709 жыл бұрын
Thank you so much :-*
@WonderingNobody9 жыл бұрын
Could you please tell me how I wold calculate the Kinematic relation if the length of S2 is not equal to S1?I mean both pulleys are closer to each other?
@bdcoller9 жыл бұрын
+I Wonder : It's the same. There is no assumption that s1 and s2 are the same or similar.
@WonderingNobody9 жыл бұрын
Thanks but I am having hard time to understand the 2:1 relation Between S1 and S2.If The part of the rope after C2 is not equal to S1 then we can not write 2S1 in the length equation.I have the same problem in my Mechanics exercise .But In that case two pulleys are closer to each other.
@karimkhan131210 жыл бұрын
extra ordinary very good
@cimmy3335 жыл бұрын
thx
@bdcoller5 жыл бұрын
wlcm
@Utshaw8 жыл бұрын
Can anybody explain me why a1 is not equal to -a2 here??
@bdcoller8 жыл бұрын
It's because of the pulley kinematics. When block 2 moves 1 meter, block 2 moves 0.5 meter in the opposite direction. Likewise, there -2:1 ratio of velocities and accelerations.