Define angular velocity.

If polar ice caps melt, then the angular velocity of rotation of earth

If a point on the circumference of a wheel having diameter 4 m has velocity of 1600 c m//s , then the angular velocity of the wheel will be

The angular displacement of a particle performing circular motion is theta = (t^3)/60 - t/4 where theta is in radian and 't' is in seconds. Then the angular velocity and angular accleration of the particle at the end of 5 s will be

If the blades of an aeroplane are 4 m long and rotate at the rate of 600 rpm, then the angular velocity will be

A dancer spins about himself with an angular speed omega with his arms extended. When he draws his hands in, his moment of inertia reduces by 40%. Then his new angular velocity would be

A thinuniform circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane withan angular velocity omega .Another disc of same dimensions but of mass M/4 is placed gently onthe first disc co-axially, then the angular velocity of the system is

Auniform disc of mass M and radius R is rotating in a horizontal plane about anaxis perpendicular to its plane with an angular velocity omega . Another disc of mass M/3 and radius R/2 is placed gently on the first disc coaxially. Then final angular velocity of the system is

According to the principle of conservation of angular momentum, if moment of inertia of a rotating body decreases, then its angular velocity

Define angular displacement , angular velocity and angular acceleration.

Define angular momentum of a body. Obtain an expression for angular momentum of a rigid body rotating with uniform angular velocity. State the SI unit and dimensions.