⇦ | ⇨ |
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: - A nuclear reaction is given as 4 ₁H¹→₂He⁴+₀e¹+energy Mention the type of reaction.
- The drift velocity of free electrons in a conductor is v, when a current
- 4 point charges each +q is placed on the circumference of a circle
- Match the following columns about collision
- In semiconductor at a room temperature
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
- A nuclear reaction is given as 4 ₁H¹→₂He⁴+₀e¹+energy Mention the type of reaction.
- The drift velocity of free electrons in a conductor is v, when a current
- 4 point charges each +q is placed on the circumference of a circle
- Match the following columns about collision
- In semiconductor at a room temperature
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.