A block A of mass m is moving on a frictionless horizontal plane towards a smooth wedge ( B ) of mass 2 m , which is kept at rest on smooth horizontl plane at t = 0 , At t = t 1 , it is found that b

Question

A block A of mass m is moving on a frictionless horizontal plane towards a smooth wedge ( B ) of mass 2 m , which is kept at rest on smooth horizontl plane at $t = 0$ , At $t = t_{1}$ , it is found that both block & wedge is moving with same velocity and at $t = t_{2}$ it is found that block & wedge are again moving on the horiozntal frictionless plane. In list-I work done by different forces is given and in list-II value of work done by those forces are given.

List-I List-II

TestHub · Accepted Answer

Apply work energy theoram. Work done by normal on the wedge will be equal to its change in the KE but for the whole system work done by normal will be zero .

Physics - W.E.P. Question with Solution | TestHub

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JEE Advanced 2026