Home
Class 12
PHYSICS
The rotational kinetic energies of two f...

The rotational kinetic energies of two flywheels are equal. If the ratio of their moments of inertia is 1:9 then the ratio of their’angular momenta is

A

`5: 1

B

`1: 4

C

`1: 3

D

`4: 1

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

The rotational kinetic energies of two bodies of moments of inertia 9 kg m^2 and 1kg m^2 are same. The ratio of their angular momenta is

Kinetic energy of a wheel rotating about its central axis is E. Then kinetic energy of another wheel having twice the moment of inertia and half the angular momentum as that of the first wheel is

If the masses of two uniform discs are in the ratio 1: 2 and their diameters are in the ratio 2 : 1, then the ratio of their moments of inertia about the axes passing through their respective centres and perpendicular to their planes will be

Two solid spheres(A and B) are made of metals,of different densities p_A and p_B respectively. If their masses are equal, the ratio of their moments of inertia ((I_B)/(I_A)) about their respective diameters is

Kinetic energy of a body is 4 J and its moment of inertia is 2 kg m^2 , then angular momentum is

The ratio of the dimension of Planck's constant and that of moment of inertia is the dimension of

Two circular discs of same mass and thickness are made from metals having densities p_1 and p_2 respectively. The ratio of their moments of inertia about an axis passing through their centre is,

The side of two similar triangles are 4:9. What is the ratio of their area?

The ratio of lengths of two rods A and B of same material is 1:2 and the ratio of their radii is 2:1 , then the ratio of modulus of rigidity of A and B will be

A flywheel rotating about a fixed axis has a kinetic energy of 360 J when its angularspeed is 30 rad/s, then the moment of inertia of fly wheel about the axis of rotation will be