Question

Both the blocks as shown in figure are given together a horizontal velocity towards right. The acceleration of the centre of mass of the system of block is `(m_(A) = 2m_(B) = 2kg)`.

A. Zero
B. `(5/3)ms^(-2)`
C. `(7/3) ms^(-2)`
D. `2 ms^(-1)`

Answer 1

Correct Answer - D
`a_(CM)` = (External force)/(Total mass)
= Force of friction from ground/Total mass
`(0.2 xx(2+1)(10))/(1+2) = 2ms^(-1)`