In each situation of column-I, a system involving two bodies is given. All strings and pulleys are light and friction is absent everywhere. Initially each body of every system is at rest. Consider the system in all situation of column I from rest till any collision occurs. Then match the statements in column - I with the corresponding results in column - II

Answer

(A) `rarr` q; (B) `rarr` p, q; (C ) r; (D) `rarr` s

Explanation

(A) Net force on block m acts in downward direction
`:.` Acceleration of centre of mass is in downward direction.
(B) Net force acts in downward as well as in horizontal direction.

`:. a_(cm)` moves both in horizontal & vertical direction.
(C ) As the mass of monkey & block is same both moves upward.
`:.` Centre of mass moves upward
(D) Centre of mass of the system does not moves