A disc rotates about its aixs of symmetry in a horizontal plane at a steady rate
Channel: Doubtnut
Date: 2020-01-03

A disc rotates about its aixs of symmetry in a horizontal plane at a steady rate of 3.5 revolutions per second A coin placed at a distance fo 1.25 cm form the axis of ratation remains at rest on the disc The coefficient of friction between the coin and the disc is : `(g=10//s^(2))`