| ⇦ | 
| ⇨ |
If a gymnast, sitting on a rotating stool with his arms outstretched, suddenly lower his hands, then
Options
(a) The angular velocity decreases
(b) His moment of inertia decreases
(c) The angular velocity stays constant
(d) The angular momentum increases
Correct Answer:
The angular momentum increases
Explanation:
A gymnast sitting on a rotating stool with his arms outstretched. Suddenly when he lower his hands his moment of inertia I decreases. Since his angular momentum Iω remains constant and I decreases, his angular velocity ω increases.
Related Questions: - In depletion layer of unbiased P-N junction
- A single slit Fraunhogger diffraction pattern is formed with white light.
- In the experiment for determination of velocity of sound in air,
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- Given A=4i+6j and B=2i+3j. Which of the following is correct?
Topics: Motion of system of Particles and Rigid Body
(73)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In depletion layer of unbiased P-N junction
- A single slit Fraunhogger diffraction pattern is formed with white light.
- In the experiment for determination of velocity of sound in air,
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- Given A=4i+6j and B=2i+3j. Which of the following is correct?
Topics: Motion of system of Particles and Rigid Body (73)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
The angular momentum increases because it depends on radius.Here when he lowers his hand the radius increases.