A wheel is rotating with an angular speed of r.p.m on a shaft. Second identical wheel axially at rest is suddenly coupled on the same shaft. What is the angular speed of the resultant combination ?Assume M.I of shaft to be negligible.

A wheel is rotating with frequency of 500 rpm on a'shaft, second identical wheel initially at rest is suddenly coupled on same shaft. The frequency of the resultant combination is

A wheel rotates with a constant angular velocity of 300 r.p.m. The angle through which the wheel rotates in one second is

A flywheel rotates at a constant speed of 3000 r.p.m. The angle described by the shaft in one second is

A wheel of moment of inertia 2 xx 10^3 kg m^2 is rotating at uniform angular speed of 4 rad/s,.then . the torque required to stop it in one second is,

A hollow sphere of mass 'M' and radius 'R' is rotating with angular frequency 'omega’. It suddenly stops rotating and 75% of kinetic energy is converted to heat. If 'S' is the specific heat of the material in J//kg K then rise in temperature of the sphere is (M.I. of hollow sphere = 2/3 MR^2 )

A body mass 100 g is revolving in a horizontal circle. If its frequency of rotation is 3.5 r.p.s. and radius of circular path is 0.5 m, the angular speed of the body is

Calculate the angular acceleration if a flywheel gains a speed of 540 r.p.m. in 6 seconds.

A wheel of moment of inertia 2 kg m^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 person stands on a uniformly rotating turn table with outstretched arms holding two identical weights. The moment of inertia of the system is 60 kgm^2 . When he brings the arms close to his body, the M.I. of inertia reduces to 58 kgm^2 . The angular speed of the system now becomes 3 rad s^-1 . Find the initial angular speed and the final K.E.