A block of mass m is stationary with respect to a wedge of mass M moving with uniform speed v on a horizontal surface. Find the work done by friction force on the block in t second.

Question

A block of mass m is stationary with respect to a wedge of mass M moving with uniform speed v on a horizontal surface. Find the work done by friction force on the block in t second., zero, - m g v t 2 sin ⁡ 2 θ, - m g v t 2, - m g v t 2 sin 2 ⁡ θ

MARKS App · Accepted Answer

As the block is at rest with respect to wedge, f r = m g sin ⁡ θ Work done by friction W = F S cos ⁡ θ W = - m g sin ⁡ θ v t cos ⁡ θ W = - m g sin ⁡ 2 θ 2 v t

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