A disc's angular velocity changes from 50 rad/s to 0 rad/s in 10 s. Its angular acceleration is:

  1. -5 rad/s^2
  2. 5 rad/s^2
  3. -10 rad/s^2
  4. -2.5 rad/s^2
Answer

A) -5 rad/s^2

alpha = omegaf - omegait = -5 rad/s^2. SLO P-11-B-08 · Understanding

Physics MCQ · More Circular and Rotational Motion MCQs · Practise