A body starting from rest gains an angular speed of `540` r.p.m in `6` second. The angular acceleration of the body is

A wheel having a diameter of 3 m starts from rest and accelerates uniformly to an angular velocity of 210 r.p.m. in 5 seconds. Angular acceleration of the wheel is

A wheel having a diameter of 3 m starts from rest and accelerates uniformly to an angular velocity of 210 r.p.m. in 5 seconds. Angular acceleration of the wheel is

If a disc starting from rest acquires an angular velocity of 240 "rev min"^(-1) in 10 s, then its angular acceleration will be

A grindstone Is found to have a angular speed of 150 rpm, 10s after starting from rest. The angular acceleration of the grindstone is

A body starting from rest covers a distance of 9 m in the fifth second. The acceleration of the body is:

Starting from rest the fly wheel of a motor attains an angular velocity of 60 rad//sec in 5 seconds. The angular acceleration obtained is

A wheel starts from rest and acquires an angular velocity of 60 rad//s in half a minute. Then its angular acceleration is