PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A grindstone is spinning freely at 40rads−1. The motor is switched off and the stone experiences a steady angular deceleration of 4rads−2 until it stops.
(i) Find the angular displacement of the grindstone before it comes to rest and express your answer both in radians and in complete revolutions.
(ii) Calculate the time interval required for the grindstone to come to a halt.