The gravity g on any planet is given by the formula seen in class : g = (G . M) / R2. If Planet A has the same mass as Planet B but the raduis of Planet A is as twice as the raduis of Planet B, we can say O The gravity g on Planet A is 4 time smaller than the gravity on Planet B The gravity g on Planet B is 4 time smaller than the gravity on Planet A O The gravity g on Planet B is 2 time smaller than the gravity on Planet A The gravity g on Planet A is 2 time smaller than the gravity on Planet B