Recent content by HenryM

well, i need to derive it from Newtons law for gravitiation.. i think. i can do it conserving the mass elements, but I am not sure how to remove them. Thanks

i have been asked to show that the TGF acting on a 1kg mass, on the surface of the Moon is equal to: TGF = 2g.e^2.(a/r^3) Where; g = 9.81 e = radius of the Earth a = radius of the Moon r = distance between the centres of the Earth and Moon.