Question

A particle of mass 'm' is kept at rest at a height
3R from the surface of earth, where 'R' is radius
of earth and M is mass of earth. The minimum
speed with which it should be projected, so that
it does not return back, is (g is acceleration due
to gravity on the surface of earth)​

Answer 1

Answer:

g=M*3R

(i.e) acceleration due to gravity on the surface of earth =mass of the earth *height