Home
Class 11
PHYSICS
A circular disc is rotating about its ow...

A circular disc is rotating about its own axis at uniform angular velocity `omega`. The disc is subjected to uniform angular retardation by which its angular velocity is decreased to `omega//2` during 120 rotations., The number of rotations further made by it before coming to rest is

A

120

B

60

C

40

D

20

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A circular disc is rotating about its own axis at an angular velocity omega . If P is exact midpoint of dise between axis and rim of disc then angular velocity of Pis

A cylinder of water, is rotating about its own axis with uniform angular velocity ω. The shape of free surface of water will be

A disc is rotating with angular velocity omega . If a child sits on it, what is conserved?

A fly wheel is rotating about its own axis at an angular velocity 11 rads^(-1) , its angular velocity in revolution per minute is

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 ?

When a disc rotates with uniform angular velocity, which of the following is not true ?

When a disc rotates with uniform angular velocity, which of the following is not true ?

A solid sphere is rotating about a diameter at an angular velocity omega . If it cools so that its radius reduces to 1//n of its original value, its angular velocity becomes

A circular disc of radius R is rotating about its axis O with a uniform angular velocity omega"rad s"^(-1) as shown in the figure. The magnitude of the relative velocity of point A relative to point B on the disc is

A rod is rotating with angular velocity omega about axis AB. Find costheta .