A star of mass twice the solar mass and radius `10^(6)` km rotates about its axis with an angular speed of `10^(-6)"rad"s^(-1)`. What is the angular speed of the star when it collapses (due to inward gravitational) force) to a radius of `10^(4)km`?

A star of mass equal to two solar masses and radius 10^(6) km rotates about its axis with an angular speed of 10^(-6)rad s^(-1) . What is the angular speed of the star, when it collapses (due to inward gravitational forces) to a radius of 10^(4) km ?

An solid cylinder of mass 20 kg and radius 20 cm rotates about its axis with a angular speed 100 rad s^-1 . The angular momentum of the cylinder about its axis is.

The mass ofa star is 3.98 xx 10^30 kg and its radius is 106 km. It rotates.about its axis with an angular speed of 10^(-6) rad/s. Calculate the speed of the star when it collapses to a radius of 10^4 km ? Assume the moment of inertia of the star to be 2/5 mr^(2) .

A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of a. a point on the rim, b. the middle point of a radius.

A homogeneous disc of mass 2 kg and radius 15 cm is rotating about its axis with an angular velocity of 4 rad/s. the linear momentum of the disc is

A solid cylinder of mass 10 kg and radius 20 cm is free to rotate about its axis. It receives an angular impulse of 4 kgm^(2)rad//s . What is the angular speed of the cylinder if the cylinder is initially at rest ?

A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of a. a point on the rim, b. the middle point of the radius.

A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of a. a point on the rim, b. the middle point of the radius.