Home
Class 12
PHYSICS
A rod has length l density of material D...

A rod has length l density of material D and area of cross section is A. If it rotates about its axis perpendicular to the length and passing through its centre, then its kinetic energy of rotation will be

A

`(Al^3D.omega^2)/12`

B

`(Al^3D.omega^2)/24`

C

`(Al^3D.omega^2)/6`

D

`(Al^3D.omega^2)/48`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Radius of gyration of disc rotating about an axis perpendicular to its plane passing through its centre is (If R is the radius of disc)

A thin uniform rod 2m long has a mass of 0.6 kg. Find its moment of inertia and radius of gyration about an axis perpendicular to its length and passing through: its centre

A ring of radius R is made of a thin wire of material of density rho , having cross-section area a and Young's modulus y. The ring rotates about an axis perpendicular to its plane and through its centre. Angular frequency of rotation is omega . The ratio of kinetic energy to potential energy is

A ring of radius R is made of a thin wire of material of density rho , having cross-section area a and Young's modulus y. The ring rotates about an axis perpendicular to its plane and through its centre. Angular frequency of rotation is omega . The tension in the ring will be

If a solid sphere of mass 1kg and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad/s, then the kinetic energy of rotation will be

A thin uniform rod 2m long has a mass of 0.6 kg. Find its moment of inertia and radius of gyration about an axis perpendicular to its length and passing through: one end

In a Faraday disc dynamo, a metal disc of radius R rotates with an angular velocity about an axis perpendicular to the plane of the disc and passing through its centre.The disc is placed in a magnetic field B acting perpendicular to the plane of the disc.Determine the induced emf between the rim and the axis of the disc.

If the moment of inertia of a thin uniform circular disc about diameter „is I, then its M.I. about an axis perpendicular to its plane and passing through a point on its rim will be

The equiconvex lens has focal length f. If is cut perpendicular to the principal axis passing through optical centre, then focal length of each half is