A disc's angular velocity changes from 10 rad/s to 40 rad/s in 5 s. Its angular acceleration is:

  1. 3 rad/s^2
  2. 12 rad/s^2
  3. -6 rad/s^2
  4. 6 rad/s^2
Answer

D) 6 rad/s^2

alpha = omegaf - omegait = 6 rad/s^2. SLO P-11-B-08 · Understanding

Physics MCQ · More Circular and Rotational Motion MCQs · Practise