Answer to Question #188748 in Physics for Charles

Question

Prove that W= mgR^2/(R+h)^2

Answer 1

$W=GMm/R^2=GMm/(R+h)^2=(GM/R^2)\cdot(R^2/(R+h)^2)\cdot m=$

$=g\cdot(R^2/(R+h)^2)\cdot m$