A disc of moment of inertia `4kgm^2` is spinning freely at `3rads^(-1)`. A second disc of moment of inertia `2kgm^2` slides down the spindle and they rotate together. (a) What is the angular velocity of the combination ? (b) What is the change in kinetic energy of the system?

A disc is rotating with angular speed omega_(1) . The combined moment of inertia of the disc and its axle is I_(1) . A second disc of moment of inertia I_(2) is dropped on to the first and ends up rotating with it. Find the angular velocity of the combination if the original angular velocity of the upper disc was (a) zero (b) omega_(2) in the same direction as omega_(1) and (c) omega_(2) in a direction opposite to omega_(1) .

A disc is rotating with angular speed omega_(1) . The combined moment of inertia of the disc and its axle is I_(1) . A second disc of moment of inertia I_(2) is dropped on to the first and ends up rotating with it. Find the angular velocity of the combination if the original angular velocity of the upper disc was (a) zero (b) omega_(2) in the same direction as omega_(1) and (c) omega_(2) in a direction opposite to omega_(1) .

A body of moment of inertia 2kg-m^2 has a rotational kinetic energy 4J. What is the angular momentum of the body ?

A body of moment of inertia 2kg-m^(2) has a rotational kinetic energy of 4 J. What is the angular momentum of the body ?

A disc of moment of inertia I_(1) is rotating freely with angular speed omega_(1) when another non-rotating disc of moment of inertia I_(2) is dropped on it. The two discs then rotate as one unit. Find the final angular speed.

A disc of moment of inertia 2 kg -m^(23) revolving with 8 rad//s is placed on anothere disc of moment of inertia 4 kg-m^(2) revolving 4 rad//s .What is the angular frequency of composite disc?

A disc of moment of inertia 2 kg -m^(23) revolving with 8 rad//s is placed on anothere disc of moment of inertia 4 kg-m^(2) revolving 4 rad//s .What is the angular frequency of composite disc?

A disc of moment of inertia 3 kg m^(2) is acted upon by a constant torque of 60 Nm, if the disc is at rest, then the time after which the angular velocity of the disc is 90 rad/s, will be

A disc of moment of inertia 3 kg m^2 is acted upon by a constant torque of 60 Nm, if the disc is at rest, then the time after which the angular velocity of the disc is 90 rad/s, will be