Question

explain why some of the leaves may get detached from a tree if we vigorously shake its branch ​

Answer 1

The leaves would get detached if the force applied is greater than the force that holds those leaves attached to the tree. Every shake of the tree would not result in falling of leaves but only those that generate greater force than the force that holds the leaves to the tree.

Answer 2

The answer of this cause lies behind the Newton’s First Law of Motion. Initially, leaves and tree both are in rest. But when the tree is shaken vigorously, tree comes in motion while leaves have tendency to be in rest. Thus, because of remaining in the position of rest some of the leaves may get detached from a tree if we vigorously shake its branch