If a gymnast sitting on a rotating disc ...

If a gymnast sitting on a rotating disc with his arms out stretched suddenly lower his arms, then

angular velocity decreases

moment of inertia decreases

angular velocity remains constant

angular momentum decreases

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

QUESTION PAPER - MH-CET 2018
NIKITA PUBLICATION|Exercise MCQ|50 Videos
SEMICONDUCTORS
NIKITA PUBLICATION|Exercise MCQS|350 Videos

Similar Questions

Explore conceptually related problems

A gymnast standing on a rotating stool with his arms outstretched, suddenly lowers his arms

If a person sitting on a rotating stool with his hands outstretched, suddenly lowers his hands, then his

A man is sitting on a rotating stool with his arms outstretched. If suddenly he folds his arms the angular velocity of the man would

A man, sitting firmly over a rotating stool has his arms streched. If he folds his arms, the work done by the man is.

A person is standing on a rotating platform, with his arms at his sides. If he stretches his arms, then which of the following statements is correct?

A person sitting firmly over a rotating stool has his arms stretched. If he folds his arms, his angular momentum about the axis of rotation

A preson is standing on the centre of a rotating table with his arms outstretched. The table is rotating freely with an angular his hands towards his chest. The moment of inertia reduces to (3)/(5) time the original moment of inertia. Calculate angular speed of the man when he withdraws his hands.

If a person standing on a rotating disc stretches out his hands, the angular speed will

A man stands on a rotating platform with his arms stretched holding a 5 kg weight in each hand. The angular speed of the platform is 1.2 rev s^-1 . The moment of inertia of the man together with the platform may be taken to be constant and equal to 6 kg m^2 . If the man brings his arms close to his chest with the distance n each weight from the axis changing from 100 cm to 20 cm . The new angular speed of the platform is.

NIKITA PUBLICATION-ROTATIONAL MOTION -MULTIPLE CHOICE QUESTIONS

A person can balance easily on a moving bisycle but cannot balance on ...
Text Solution
|
If the torque acting on a system is zero then, which of the followin q...
Text Solution
|
If a gymnast sitting on a rotating disc with his arms out stretched su...
Text Solution
|
A particle moves with a constant velocity parallel to the X-axis. Its ...
Text Solution
|
When a mass is rotating in a plane about a fixed point, its angular mo...
Text Solution
|
A person is standing on a rotating wheel. If the sits on the wheel, th...
Text Solution
|
A man stands at the centre of turn table and the turn table is rotatin...
Text Solution
|
A man turns on a rotating table with an angular velocity omega. He is ...
Text Solution
|
If polar ice caps melt, then the time duration of one day
Text Solution
|
Two rigid bodies have same moment of inertia about there axes of symme...
Text Solution
|
There are two identical spherical balls of same material one being sol...
Text Solution
|
Angular momentum of the system of particles changes when
Text Solution
|
The term moment of momentum is called
Text Solution
|
Write the dimensional formula of angular momentum. Is it scale or vect...
Text Solution
|
If a body of mass 'm' and radius of gyration K rotates with angular ve...
Text Solution
|
The angular momentum of a particle is
Text Solution
|
A heavy disc is rotating with uniform angular velocity omega about its...
Text Solution
|
A body comes and sits suddenly on a circular rotating table the quanti...
Text Solution
|
If a person standing on a rotating disc stretches out his hands, the a...
Text Solution
|
Which of the following physical quantity has unit kg m^(2)//s ?
Text Solution
|