1. Tardigrade
  2. Question
  3. Physics
  4. If a gymnast, sitting on a rotating stool with his arms outstretched, suddenly lowers his hands.

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. If a gymnast, sitting on a rotating stool with his arms outstretched, suddenly lowers his hands.

UPSEEUPSEE 2010System of Particles and Rotational Motion

Solution:

As the gymanst lowers his hands, the radius of gyration decreases and hence moment of inertia also decreases. Angular momentum remains conserved and hence angular velocity increases.