A body of mass 500g is town upwards with a velocity `20 ms^(-1)` and reaches back to the surface of a planet after 20s. Then the weight of the body on that planet is

A body of mass 500 g is thrown upwards with a velocity 20 ms^-1 and reaches back to the surface of a planet after 20 sec . Then the weight of the body on that planet is (Assume g to be constant) xN. Find x.

A body of mass 500 g is thrown upwards with a velocity 20 ms^-1 and reaches back to the surface of a planet after 20 sec . Then the weight of the body on that planet is (Assume g to be constant) xN. Find x.

Escape speed on the surface of a planet varies with the mass m of a body as

A small body of mass is projected with a velocity just sufficient to make it reach from the surface of a planet ( or radius 2R and mass 3M ) to the surface of another planet (or radius R and mass M ). The distance between the centres of the two spherical planets is 6R . the distance of the body from the centre of bigger planet is 'x' at any moment. During the journey, find the distance 'x' where the speed of the body is (a) maximum (b) minimum. Assume motion of body along the line joining centres of planets.

Escape velocity of a body 1 kg mass on a planet is 100 ms^(-1) . Gravitational potential energy of the body at that planet is

Escape velocity of a body 1 kg mass on a planet is 100 ms^(-1) . Gravitational potential energy of the body at that planet is

Escape velocity of a body 1 kg mass on a planet is 100 ms^(-1) . Gravitational potential energy of the body at that planet is

Escape velocity of a body of 1 g mass on a planet is 100 m/sec . Gravitational Potential energy of the body at the planet is