An ice skater with I = 2 kg m^2 spins at 10 rad/s, then pulls in her arms so I = 5 kg m^2. Her new angular velocity is:

  1. 8 rad/s
  2. 25 rad/s
  3. 4 rad/s
  4. 2 rad/s
Answer

C) 4 rad/s

I1omega1 = I2omega2 Rightarrow omega2 = 2 105 = 4 rad/s. SLO P-11-B-20 · Application

Physics MCQ · More Circular and Rotational Motion MCQs · Practise