A boy is driving a model aircraft with the help of a light

Last updated: 6/10/2023

A boy is driving a model aircraft with the help of a light inextensible cord of length L He does so by moving the free end of the cord with a constant speed in a horizontal circle of radius r As a result the aircraft moves in another horizontal circle of radius R r with a constant speed v at an altitude h above the plane containing circular path of the end held The centres of both the circular paths lie on a vertical line Considering the air drag find lift force of air on the aircraft