Work Energy And Power Question 218

Question: A block of mass m is suspended by a light thread from a lift. The lift is moving upward with uniform velocity v. From the frame of lift, the work done by tension on the block in t seconds will be

Options:

A) $ -mgvt $

B) $ 0 $

C) $ \frac{mgvt}{2} $

D) $ mgvt $

Show Answer

Answer:

Correct Answer: B

Solution:

[b] In the frame of lift displacement is zero, So $ W=F.S=T.S=0. $



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