Question

what is the work done by the Earth moving around the Sun

Answer 1

The work done by earth on the sun isZERO because the force acting on earth by the sun is the centriptal force and it works in 90 degree and the value of cos 90 is equal to 0. work done by the earth is zero in this case.

Answer 2

The work done by the Earth around the sun is zero because the gravitational pull of the sun is perpendicular to the motion of the earth i.e tangential