Figure 2 shows the positions of equipotential surfaces at different distances from the centre of the Moon. Figure 2 distance from centre of Moon/106 m gravitational potential/106 J kg-! 3.06 -1.60 2.58 -1.90 not to scale 2.23 Moon -2.20 Explain how the equipotential surfaces in Figure 2 show that the gravitational field is not uniform.

Figure 2 shows the positions of equipotential surfaces at different distances from the centre of the Moon. Figure 2 distance from centre of Moon/106 m gravitational potential/106 J kg-! 3.06 -1.60 2.58 -1.90 not to scale 2.23 Moon -2.20 Explain how the equipotential surfaces in Figure 2 show that the gravitational field is not uniform.