Question

Block M slides down on friction less incline as shown. Find the minimum friction coefficient so that ‘m’ does not slide with respect to ‘M’.

Answer 1

Since, m does not slide on the block M. So, both block move together.

From force diagram of combined mass(m + M),

(M + m)g sin 37º = (m + M)a₀ 

∴ a₀ = 10 x 3/5 = 6m/s² along inclined surface.

From force diagram of smaller block in the frame of triangular block,