A disc spinning on its axis at 20 rad/s will undergo precession when a torque 100 N-m is applied about an axis normal to it. If the mass moment of inertia is 1 kg-m², then the angular velocity of precession is?
- A. 0.2 rad/s
- B. 5 rad/s
- C. 10 rad/s
- D. 200 rad/s
Answer: B. 5 rad/s