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The block of mass m is kept on plank of ...


The block of mass m is kept on plank of mass M. The block is given velocity `V_(0)` as shown. The coefficient of friction between the block of mass m and plank of mass M is `mu` and its value is such that block becomes stationary with respect to plank before it reaches the other end. Then:

A

The work done b friction on the block is negative

B

the work done by friction on the plank is positive

C

the net work done by friction is negative

D

net work done by the friction is zero.

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The correct Answer is:
A, B, C
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