When the skater pulls in her arms, her rotational kinetic energy:

  1. becomes zero
  2. decreases
  3. increases (she does work pulling her arms in)
  4. stays the same
Answer

C) increases (she does work pulling her arms in)

E = L^22I grows as I falls. SLO P-11-B-20 · Application

Physics MCQ · More Circular and Rotational Motion MCQs · Practise