A wheel at rest starts rotating with constant angular acceleration of `alpha`= 4 rad/`s^2` about a fixed axis passing through its center and perpendicular to its plane .Find after how much time does the net acceleration of a point on the rim of the wheel of radius 16 cm becomes 64`sqrt17` cm/`s^2`?

A disc starts rotating with a constant angular acceleration of 1 rad//s^(2) about a fixed vertical axis perpendicular to its plane and passing through its centre. A coin of mass 10 gm is placed on the disc at a distance of 10cm from the axis. The coefficent of friction between the disc and the coin is 0.2 . The value of the frictional force on the coin at t=1s will be

A circular disc has a mass of 1kg and radius 40 cm. It is rotating about an axis passing through its centre and perpendicular to its plane with a speed of 10rev/s. The work done in joules in stopping it would be-

A particle is moving with a constant angular acceleration of 4rad//s^(2) in a circular path. At time t=0 , particle was at rest. Find the time at which the magnitudes of centripetal acceleration and tangential acceleration are equal.

A ball starts moving in a circular slot with angular acceleration alpha = 2 rad //s^2 at t=0 The angle between its velocity and acceleration varies with time as

The radius of a wheel is R and its radius of gyration about its axis passing through its center and perpendicualr to its plane is K. If the wheel is roling without slipping. Then the ratio of tis rotational kinetic energy to its translational kinetic energy is

A wheel of moment of inertia 2 kgm^(2) is rotating about an axis passing through centre and perpendicular to its plane at a speed 60 rad//s . Due to friction, it comes to rest in 5 minutes. The angular momentum of the wheel three minutes before it stops rotating is

A wheel at constant angular acceleration with 3 rad/s^(2) . During a 4s interval,it turns through an angel of 60 rad . If the wheel started from rest how long has it been in motion before the start of this 4s interval?

A disc rotates about its axis with a constant angular acceleration of 4rad/s^2 . Find the radial and tangential acceleration of a particle at a distance of 1 cm from the axis at the end of the first second after the disc starts rotating.

A point at the periphery of a disc rotating about a fixed axis moves so that its speed varies with time as v = 2 t^2 m//s The tangential acceleration of the point at t= 1s is

A wheel starts rotating with an-angular velocity of 2 rad/s. If it rotates with a constant angular acceleration 4 "rad/s"^2 what angle does the wheel rotate through in 2.0 s ? What is the angular speed, after 2.0 s.