A horizontal disc rotating about a vertical axis passing through its centre makes 180
Channel: Doubtnut
Date: 2020-08-23

A horizontal disc rotating about a vertical axis passing through its centre makes 180 rpm. A small piece of wax of mass 10 g falls vertically on the disc and adheres to it at a distance of 8 cm from its axis. If the frequency is thus reduced to 150 rpm, calculate the moment of inertia of the disc.