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Question

Block B is moving towards right with constant velocity v0. Velocity of block A with respect to block B is (assume all pulleys and strings are ideal):

281446.png

A
v02, left
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B
v02, right
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C
32v0, right
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D
32v0, left
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Solution

The correct option is A v02, right
The total power for the system is conserved.

So, VA(2T)=V0(3T)

VA=3V02
VAB=32V0V0=V02

256076_281446_ans.png

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