Home
Class 11
PHYSICS
If no torque acts on a rotating body and...

If no torque acts on a rotating body and if its moment of inertia decreases the angular velocity `omega` of the body increases such a manner that

A

`(1)/(2)Iomega^(2)` remains constant

B

`Iomega` remains constant

C

`(I)/(omega)` remains constant

D

`Iomega^(2)` remains constant

Text Solution

Verified by Experts

The correct Answer is:
B
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ROTATION OF RIGID BODIES

    CHHAYA PUBLICATION|Exercise Very Short Answer Type Questions|5 Videos

  • ROTATION OF RIGID BODIES

    CHHAYA PUBLICATION|Exercise Very Short Answer Type Questions ( Based on Torque )|2 Videos

  • ROTATION OF RIGID BODIES

    CHHAYA PUBLICATION|Exercise EXERCISE ( Based on Rotational Kinetic Energy )|5 Videos

  • QUESTION PAPERS OF WBCHSE -2018

    CHHAYA PUBLICATION|Exercise SECTION -II|20 Videos

  • SIMPLE HARMONIC MOTION

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|16 Videos

Similar Questions

Explore conceptually related problems

State whether your weight will increase or decrease if the angular velocity of the earth increases.

What physical quantity is represented by the product of moment of inertia and the angular velocity.

Knowledge Check

  • A mass is supported on a frictionless horizontal surface. it is attached to a string and rotates about a fixed centre at an angular velocity omega_0 If the length of the string and angular velocity are double. the tension in the string which was initially T_0 is now

    A
    `T_0`
    B
    `T_0/2`
    C
    `4T_0`
    D
    `8T_0`

    • Similar Questions

    Explore conceptually related problems

    If the moment of inertia of a body rotating about an axis is increased, state whether its angular velocity increases or decreases when no external torque acts on the body.

    If no external torque acts on a body will its angular velocity remain conserved ?

    A hollow cylinder of diameter 20 cm is rotating about its own vertical axis. If the angular velocity of the cylinder is not less than 180 rpm, then a body remains attached on the inside wall of the cylinder and keeps rotating with the cylinder. What is the coefficient of rotating with the cylinder. what is the coefficient of friction between the body and the wall of the cylinder? Given, pi^(2) = 9.8.

    A thin circular ring of mass M and radius R is rotating about its own axis with a constant angular velocity omega . Two object each of mass m are placed gently on the opposite ends of a diameter of the ring. What will be the angular velocity of the ring?

    A string passes through a hole at the centre of a horizontal table. The upper end of the string is tied to a mass m kept on the table, and at the lower end, a body of mass M is kept hanging. If the table rotates at an angular velocity omega , the mass M remains at rest. Show that, omega = sqrt((M)/(m)cdot(g)/(r)) . [ r is the radius of the circular path along which the mass m is rotating ]

    Show that the torque acting on a body is equal to the rate of change of angular momentum of the body.

    How does the moment of inertia of a body change with temperature?

    Home
    Profile