A ceiling fan starts from rest and reaches a speed of 900 rpm in 15 s while rotating…
PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A ceiling fan starts from rest and reaches a speed of 900 rpm in 15 s while rotating with uniform angular acceleration.
(a) Convert the final speed of 900 rpm into rad s−1.
(b) Calculate the magnitude of the angular acceleration of the fan during this interval.
(c) If the same angular acceleration continues to act for another 5 s, determine the angular velocity of the fan at the end of 20 s from the start.