Question

Pls answer these questions.

Answer 1

I) Option A is correct,Centre of mass as it is a point within a body where the entire mass of the body is supposed to be concentrated so that if Newton Law's of Motion is applied to that single particle then it is equivalent to the motion of complete body.

II)Since Gravitational Force inversely proportional to the square of the distance between the two bodies, the Gravitational Force will decrease 9 times.

III)The force exerted by m2 on m1 will be same 20N.