PHYSICS · Multi-part · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A flywheel has an initial angular velocity of 40rad s−1. Due to friction, its angular velocity drops uniformly to 20rad s−1 in 10s.
(i) Calculate the angular acceleration acting on the flywheel.
(ii) Find the angular displacement during these 10s.
(iii) Assuming the same constant angular retardation continues, determine the additional time required for the flywheel to come to rest after the 10s interval.
(iv) Compute the extra angle through which the flywheel will rotate while coming to rest, and hence obtain the total angle turned from the start until it stops.