if OP makes 4 revolutions in one second, the angular velocity in radians per second is?

A fly wheel is making $300$ rpm. Its angular velocity in radian per second is .

A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is $0.2\times {10}^{-4}T$, then the emf developed between the two ends of hte conductor is

A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 radian per second. If the horizontal component of earth's magnetic field is $0.2\times {10}^{-4}T$, then the e.m.f. developed between the two ends of the conductor is

The angle of rotation of a particle is given as a function of time as $\theta ={\theta }_1+at+b{t}^2$ where ${\theta }_0$ is initial angular displacement and a and b are constants. If the initial angular velocity is $3\pi$ radians per second and after 2 sec angulare velocity is $8\pi$ radians per second, then a and b respectively in SI unit are:

The angular velocity of a uniform square plate about an axis passing through the centre of mass and perpendicular to the plane is 50 radian per second. What should be its angular velocity (in radians/second) about its diagonal so that it has same magnitude of angular momentum as it has when rotating about the former axis.

If a cycle wheel of raduius 0.4m completes one revolution in one second, then acceleration of the cycle is

Length of clocks second hands 0.1 m what is the order of its angular velocity in radian per/sec.

A fan is making $600$ revolutions per minute. If after some time it makes $1200$ revolutions per minute, then the increase in its angular velocity is

A flat mirror revolves at a constant angular velocity making $n=0.4$ revolutions per second. With what velocity $\left({\text{in m s}}^{-1}\right)$ will a light spot move along a spherical screen with a radius of 15 m, if the mirror is at the centre of curvature of the screen ?

A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?