Home
Class 12
PHYSICS
A body rotating with angular velocity om...

A body rotating with angular velocity `omeg` stops after rotating for 2 sec. The torque necessary for this is?

A

`(Iomega)/2`

B

`2Iomega`

C

`Iomega`

D

`(Iomega^2)/2`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A disc is rotaing with an angular velocity omega_(0) . A constant retarding torque is applied on it to stop the disc. The angular velocity becomes (omega_(0))/(2) after n rotations. How many more rotations will it make before coming to rest ?

A rod of length l is travelling with velocity v and rotating with angular velocity omega such that (omegal)/2=v . The distance travelled by end B of the rod when rod rotates by an angle (pi)/2 is

The body is rotating with uniform angular velocity ( omega ) having rotational kinetic energy ( E) . Its angular momentum (L ) is :

A body is rotating with 900 rpm. The angular velocity mereates to 2460 rpm in 26secs due to a constant angular acceleration. Total number of revolutions during acceleration is

Suppose that angular velocity of rotation of earth is increased. Then, as a consequence :

What is the angular velocity of a particle lying on the axis of rotation ?

Calculate the instantaneous power of a body rotating with angular velocity of 20rad//s^(-2) , when an external torque of 5 Nm is applied to it. Hint : P=tau omega .

Torque acting on a rotating body