Gravitational force is the main cause of high and low tides on Earth. The diagram shows the location of two 1-kg masses of water on Earth at A and B. What is the correct expression for calculating the ratio of the force of gravity of the Moon on a 1- kg mass of water at A (nearest the Moon) compared to the force of gravity on the same mass of water at B (farthest from the Moon)? b. J 600 Ta M 60 20 20 Fe # (Ad Mto E + 5 (Adatto E - TE (Ad Mto E - TE) (AdMU E + E) (AdmE-M-7) Fes (Ad Mto E - M+E) FEN (AdME-M+E) Fes (Ad Mto E-M-E B Earth A TE AdM to E Moon OI