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The system shown in the figure is initially at rest when the lower string is cut. Ignore air resistance and friction between the rope and the pulley.

(A) Find the speed of the 2 kg mass when it is momentarily at the same height as the 3 kg mass.
(B) Find the speed of the 3 kg mass when it is momentarily at the same height as the 2 kg mass.
(C) What is the change in kinetic energy of the 2 kg mass?
(D) What is the change in potential energy of the 3 kg mass?
(E) What is the relationship between your answer in A and your answer in B, and what happens to this relationship if air resistance and friction are not negligible?

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29 Oct 2019
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5 Jan 2021

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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