A circular disc of mass `M_(1)` and radius `R`, initially moving, With a constant
Channel: Doubtnut
Date: 26/07/2020

A circular disc of mass `M_(1)` and radius `R`, initially moving, With a constant angular speed `omega` is gently placed coaxially on a stationary circular disc of mass ` M_(2)` and radius `R`, as shown in Fig. There is a frictional force between the two discs.  If disc `M_(2)` is placed on a smooth surface, then  'determine' the final angular speed of each disc.  b. Determine the work done by friction.  c. Determine the frictional loss in kinetic energy. i.e. `/_\K//K_(i)`