With what minimum speed should `m` be projected from point `C` in presence of two fixed masses `M` each at `A` and `B` as shows in the figure such that mass `m` should escape the gravitational attraction of `A` and `B` ?

With what minmum speed should m be projected from point C in presence of two fixed masses M each at A and B as shows in the figure such that mass m should escape the gravitational of A and B ?

Three particles of equal mass M each are moving on a circular path with radius r under their mutual gravitational attraction. The speed of each particle is

With what speed v_(0) should a body be projected as shown in the figure, with respect to a planet of mass M so that it would just be able to graze the planet and escape ? The radius of the planet is R . (Assume that the planet is fixed ).

A mass m is placed in the cavity inside hollow sphere of mass M as shown in the figure. The gravitational force on m is

Two masses m_(1) and m_(2)(m_(1)ltm_(2)) are released from rest finite distance. They start under their mutual gravitational attraction-

A particle of mass m is located inside a spherical shell of mass M and radius R. The gravitational force of attraction between them is

Two particles are projected with speed 4 m//s and 3 m//s simultaneously from same point as shown in the figure. Then :

A point P lies on the axis of a fixed ring of mass M and radius a , at a distance a from its centre C . A small particle starts from P and reaches C under gravitational attraction only. Its speed at C will be.