Question

Two blocks of equal masses are connected by an ideal string passing over an ideal pulley as shown in the figure

All the surfaces in contact with blocks are rough having coefficient of kinetic friction `mu` between them. If the blocks slide with constant velocity, find the value of `mu`​

Answer 1

Considering the equilibrium of A, we get 10a = 10g sin 30º - T - mN where N = 10g cos 30°

but a =0, T =