Year: 2019
Topic: System of particles and rotational motion
Time :
1.
A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis atthe rate of 3 rpm. The torque required to stop it after \(2\,\pi\) revolutions is
(1). \(2 \times 10^6\,N m\)
(2). \(2 \times 10^ {−6}\,N m\)
(3). \(2 \times 10^{ −3}\,N m\)
(4). \(12 \times 10^{ −4}\,N\)