A flywheel starts from rest and is subjected to a constant angular acceleration

PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A flywheel starts from rest and is subjected to a constant angular acceleration. Its angular velocity reaches

20\,\text{rad s}^{-1}

after it has turned through

50

revolutions. (a) Calculate the angular acceleration. (b) Determine the time taken to attain this speed.