The angular velocity of rotation of star (of mass M and radius R ) at which the matter start to escape from its equator will be

The angular velocity of rotation of a planet of mass M and radius R, at which the matter start to escape from its equator is

The angular velocity of rotation of a planet of mass M and radius R, at which the matter start to escape from its equator is

The escape velocity form the centre of a unifrom ring of mass M and radius R is :

An extremely small and dense neutron star of mass M and radius R is rotating with angular velocity omega . If an object is placed at its equator, then it will remain stuck to it due to gravity, if

An extremely small and dense neutron star of mass M and radius R is rotating with angular velocity omega . If an object is placed at its equator, then it will remain stuck to it due to gravity, if

A uniform disc of mass M and radius R is rotating in a horizontal plane about an axis perpendicular to its plane with an angular velocity omega . Another disc of mass M/3 and radius R/2 is placed gently on the first disc coaxial. Then final angular velocity of the system is

Auniform disc of mass M and radius R is rotating in a horizontal plane about anaxis perpendicular to its plane with an angular velocity omega . Another disc of mass M/3 and radius R/2 is placed gently on the first disc coaxially. Then final angular velocity of the system is

If v_(e) is the escape velocity of a body from a planet of mass 'M' and radius 'R . Then the velocity of the satellite revolving at height 'h' from the surface of the planet will be