Question

what is workdone by earth gravitational force in keeping the moon in its orbit for its one revolution?

Answer 1

in this case ,workdone is zero , because force direction to the motion is perpendicular ,
thus,. w=f×s×cos90 degree
now, w= f×s ×0. (cos 90degree =0)
therefore =w =0

Answer 2

Answer:

it is 0

Explanation:

because force is perpendicular and so it is 0