Question

A ten paisa coin placed on the revolving table flies off tangentially. This is due to the inertia of motion ?

Answer 1

No , this is due to inertia of direction.

When a the coin is placed on the revolving table , the coin stays on the table because of the force of friction between the coin and the table. This frictional force balances the centrifugal force of the table .

When the centrifugal force becomes greater than the frictional force , the coin flies off tangentially due to inertia of direction as the coin has the tendency to regain its natural straight line path.