In Fig if `F = 4N , m= 2 kg M = 4 kg` then

Options

A. The acceleration of m w.r.t. ground is `2//3 ms^(-2)`
B. The acceleration of m w.r.t. ground is `1.2 ms^(-2)`
C. Acceleration of M is `0.4ms^(-2)`
D. Acceleration of M w.r.t.ground is `2//3ms^(-2)`

Answer

b,c

Explanation

Here `Fgt mu mg (1 + (m)/(M))` , so slipping will occar between the block
For` m F - mu_(s) mg = m a rArr a = 1.2 ms^(-2)`
For `M mu_(s) mg = MA rArr A = 0.4 ms^(-2)`