10.6 Pulleys (STATISTICS AND MECHANICS 1 - Chapter 10: Forces and motion)

[@izzywarhurst1019]

this topic has been killing me. thank you so much for this

[@HindsMaths]

👍🏿👍🏿👍🏿👍🏿

[@janomar7551]

This is extremely helpful. Thank you!

[@HindsMaths]

Glad it helped you

[@miraclesicky]

Hi there, 28:24 part b Why is S (displacement) positive 0.5? B is going downwards so displacement should be negative, acceleration positive because gravity acts downwards? I am really confused when to put displacement and acceleration as +ve or -ve. Please explain sir, ty ❤

[@HindsMaths]

I'm taking the downward direction as the positive direction as that's the way the particle is moving

[@hadeeldossa6689]

thank you so much !!!!

[@HindsMaths]

You're welcome

[@muhammadabubakar3521]

In example 14 why we don't talk about of the particle A lies on a rough horizontal table 4.5m from a small pulley...?

[@HindsMaths]

If I understand your question correctly (and I think you mean example 14, as there is no example 12), then that information is used in part b

[@muhammadabubakar3521]

@@HindsMaths Thanks sir..superb way of teaching..I really enjoyed your lessons and impressed by your knowledge plus your teaching styles.Great effort best wishes for you😍

[@HindsMaths]

Thank you very much 👍🏿👍🏿👍🏿

[@zaneegiebade7790]

With the mg does the g represent gravity(9.8)

[@HindsMaths]

Yes it does

[@Bnz17]

If a string is inextensible, the tension is the same throughout the string?

[@HindsMaths]

No. Inextensible means that we can assume that the acceleration is the same either side of the pulley. We can assume the same tension throughout the string if we model the string as light

[@Bnz17]

@@HindsMaths thank you

[@HindsMaths]

You're welcome