Question

People often shake branches of trees for getting the fruit down explain why

Answer 1

when the branches are Shaked the branches come to motion at once but the fruits due to inertia of rest continue to be at rest and so it falls off

Answer 2

people often shake branches of trees for getting fruits as dey apply external force on da branches not on da fruits so...as a result da fruits come to da ground
(according to newton's first law)