A disc turns through 200 rad in 10 s starting from rest with uniform alpha. Its angular acceleration is:

  1. 2 rad/s^2
  2. 4 rad/s^2
  3. 20 rad/s^2
  4. 40 rad/s^2
Answer

B) 4 rad/s^2

200 = 12alpha(10)^2 Rightarrow alpha = 4 rad/s^2. SLO P-11-B-09 · Application

Physics MCQ · More Circular and Rotational Motion MCQs · Practise