A hollow cylindrical pipe of mass M and radius R has a thin rod of mass m welded inside it, along
Channel: Doubtnut
Date: 2020-02-17

A hollow cylindrical pipe of mass M and radius R has a thin rod of mass m welded inside it, along its length. A light thread is tightly wound on the surface of the pipe. A mass `m_(0)` is attached to the end of the thread as shown in figure. The system stays in equilibrium when the cylinder is placed such that `alpha = 30^(@)` The pulley shown in figure is a disc of mass `(M)/(2)` (a) Find the direction and magnitude of friction force acting on the cylinder. (b) Express mass of the rod �m� in terms of `m_(0)`