im new to this so excuse my probably stupid question 😂😅 but why was the free body diagram drawn around that section, i understand static principles and conditions, but why specifically that area, why not aywhere else. that aside, very informative video, thank you
The boundary of a free body diagram is drawn so that the specific tensions and/or forces can be analyzed. You can draw them at different points and then see what information you can extract from that.
Could you please explain how you know to include the bottom two pulleys in the FBD? It's not clear to me how you know that it needs to include both pulleys instead of just the bottom one. Thank you for your help.
When I was a little kid my dad told me that two pulleys could save one-half force. Now I see five pulleys make you only use one fifth of force. Is it true that F=(1/#of pulleys)*weight (when the mass of the pulleys is negligible)?
Hiya sir, In terms of the force acting on the wall, I'm sure the left string would be 40N, but for the right one connected to the wall, I'm not sure, but my understanding would be that it is 80N? So the total force on the wall is 120N. Would that be correct?
Hello sir, would love to see a pulley video explanation with double pulley problems where the pulleys are attached, like this: study.com/cimages/multimages/16/040619-171346967221039034405.jpg
We meet again. You helped me years ago. Cheers 🍻
Meraviglioso. Cheers from italy!
Glad you found our videos! Welcome to the channel! 🙂
U are really amazing sir thnx a lot👌😊
Thank you. Glad you like our videos. 🙂
im new to this so excuse my probably stupid question 😂😅 but why was the free body diagram drawn around that section, i understand static principles and conditions, but why specifically that area, why not aywhere else. that aside, very informative video, thank you
The boundary of a free body diagram is drawn so that the specific tensions and/or forces can be analyzed. You can draw them at different points and then see what information you can extract from that.
Could you please explain how you know to include the bottom two pulleys in the FBD? It's not clear to me how you know that it needs to include both pulleys instead of just the bottom one. Thank you for your help.
Since the bottom two pulleys are connected by a solid bar, they must be considered together as part of the same subsystem.
@@MichelvanBiezen Thank you, that makes a lot of sense. I'm not sure why I overlooked that.
When I was a little kid my dad told me that two pulleys could save one-half force. Now I see five pulleys make you only use one fifth of force. Is it true that F=(1/#of pulleys)*weight (when the mass of the pulleys is negligible)?
It depends on the arrangement of the pulleys. We'll show some examples in the future where that is not the case.
Hiya sir,
In terms of the force acting on the wall, I'm sure the left string would be 40N, but for the right one connected to the wall, I'm not sure, but my understanding would be that it is 80N? So the total force on the wall is 120N. Would that be correct?
40 N on the left string and 80 N on the right string, correct.
Thanks a lot for the prompt reply! You're a legend.@@MichelvanBiezen
Thank You Teacher
You are welcome
😃😃😃
😃😃🤛🤛🤛🤛🤛🤛
Thank you. Glad you liked it. 🙂
Hello sir, would love to see a pulley video explanation with double pulley problems where the pulleys are attached, like this: study.com/cimages/multimages/16/040619-171346967221039034405.jpg
Does the pulley have mass? That makes a big difference.
@@MichelvanBiezen Either way sir, double pulley problems are very common on exams