Two wheels, each of moment of intertia 4 kg. `m^(2)`, rotate side by side at the rate of 120 rpm and 240 rpm in opposite directions. If both the wheels are coupled by a light shaft so that they now rotate with a com on angular speed, find this new rate of rotation.

A wheel having moment of inertia 4 kg m^(2) about its axis, rotates at rate of 240 rpm about it. The torque which can stop the rotation of the wheel in one minute is :-

A wheel of moment of inertia 0.10 kg-m^2 is rotating about a shaft at an angular speed o 160 rev/minute. A second wheel is set into rotation at 300 rev/minute and is coupled to the same shaft so that both the wheels finally rotate with as common angular speed of 200 rev/minute. Find the moment of inertia o the second wheel.

A flywheel of moment of inertia 10^(7) g cm^(2) is rotating at a speed of 120 rotations per minute. Find the constant breaking torque required to stop the wheel in 5 rotations.

A wheel having moment of inertia 2 kg m^(2) about its vertical axis, rotates at the rate of 60 rom about this axis. The torque which can stop the wheel's rotation in one minuted woould be

A wheel having moment of inertia 2 kig m^2 about its xis, rotates at 50 rpm about this axis. Find the torque that can stop the wheel in one minute.

A wheel having moment of interia 2 kgm^(-2) about its axis, rotates at 50 rpm about this axis. The angular retardation that can stop the wheel in one minute is

A wheel of moment of inertia 30 kg m^(2) is rotating at 10 rotations per minute. The work done in increasing its speed to 5 times its initial value will be