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:

The work done by friction on the block is negative

The work done by friction on the plank is positive

The net work done by friction is negative

Net work done by the friction is zero

Text Solution

Verified by Experts

The correct Answer is:

(d)

Therefore, net work done by the friction cannot be zero.

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