A pulley in the form of solid disc of mass `5kg` and radius `1 m` is rotating at an angular speed
Channel: Doubtnut
Date: 23/08/2020

A pulley in the form of solid disc of mass `5kg` and radius `1 m` is rotating at an angular speed of 120 rpm when the motor is turned off, Neglecting the friction at the axle, calculate the force that must by applied tangentially to the pulley to bring it to rest in 4 revolutions.