PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A block of mass m is kept on a horizontal ruler. The coefficient of friction between the ruler and the block is μ. The ruler is fixed at one end, and the block is at a distance l from the fixed end. The ruler is rotated about the fixed end in the horizontal plane.
(1) What is the maximum constant angular speed for which the block does not slip?
(2) If the angular speed of the ruler is uniformly increased from zero at an angular acceleration α, at what angular speed will the block slip?