If a person standing on a rotating disc ...

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

increase

decrease

remain same

none of these

Text Solution

Verified by Experts

Topper's Solved these Questions

System of particles & rotational Motion
SL ARORA|Exercise EXERCISE|353 Videos
ROTATIONAL MOTION
SL ARORA|Exercise Problem for self practice|90 Videos
Thermal Properties of Matter
SL ARORA|Exercise Exercise|449 Videos

Similar Questions

Explore conceptually related problems

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

A person is standing on a rotating wheel. If the sits on the wheel, then the angular momentum of the system will

A person is standing on a rotating table with metal spheres in his hands. If he withdraws his hands to his chest, then the effect on his angular velocity will be.

Assertion: A boy is rotating in a rotating chair with some angular speed. Initially arma of the boy are stretched out. When boy folds his hands then angular speed increases Reason: Angular momentum of the system is conserved in absence of external torque.

A person is sitting on a rotating chair which is rotating with some angular velocity. Person is sitting on the chair with his arms folded. Now he slowly stretches his arm then

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?

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

A circular disc of moment of inertia I_(t) is rotating in a horizontal plane about its symmetry axis with a constant angular velocity omega_(i) . Another disc of moment of inertia I_(b) is dropped co-axially onto the rotating disc. Initially, the second disc has zero angular speed. Eventually, both the discs rotate with a constant angular speed omega_(f) . Calculate the energy lost by the initially rotating disc due to friction.

Is the angular speed of rotation of hour hand of a watch greater or smaller than the angular speed of earth's rotation about its axis ?

SL ARORA-System of particles & rotational Motion-EXERCISE

The motion of planets in the solar system is an exmaple of the conserv...
Text Solution
|
A diver in a swimming pool bends his head before diving, because it
Text Solution
|
If a person standing on a rotating disc stretches out his hands, the a...
Text Solution
|
A dancer is rotating on smooth horizontal floor with an angular moment...
Text Solution
|
A round disc of moment of inertia I2 about its axis perpendicular to i...
Text Solution
|
A uniform disc of mass M and radius R is rotating in a horizontal plan...
Text Solution
|
A thin circular ring of mass m and radius R is rotating about its axis...
Text Solution
|
A loop of mass M and radius R is rolling on a smooth horizontal surfac...
Text Solution
|
A sphere of moment of inertia 'I' and mass 'm' rolls down on an inclin...
Text Solution
|
A disc is rolling without slipping. The ratio of its rotational kineti...
Text Solution
|
A solid sphere is rolling without slipping on a horizontal plane. The ...
Text Solution
|
A disc is rolling on the inclined plane. What is the ratio of its rota...
Text Solution
|
A disc of mass 4.8 kg and radius 1 m is rolling on a horizontal surfac...
Text Solution
|
A liquid is kept in a cylindrical jar, which is rotated about the cyli...
Text Solution
|
A sphere rolls down an inclined plane of inclination theta. What is th...
Text Solution
|
An inclined plane makes an angle 30° with the horizontal. A solid sphe...
Text Solution
|
The acceleration of a solid cylinder rolling down an smooth inclined p...
Text Solution
|
A cylinder is rolling down on a inclined plane of inclination60^(@). W...
Text Solution
|
A solid cylinder is rolling without slipping on a plane having inclina...
Text Solution
|
During rolling without slipping, what is the velocity of the point in ...
Text Solution
|