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Gravitational fields (A-level only)

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Question 6

The average distance between the Earth and the Moon is 3.84×108 m3.84 \times 10^8\text{ m}3.84×108 m.

What is the magnitude of the gravitational force exerted on the Earth by the Moon?

(You may use the following values:

  • Mass of the Earth = 5.97×1024 kg5.97 \times 10^{24}\text{ kg}5.97×1024 kg
  • Mass of the Moon = 7.35×1022 kg7.35 \times 10^{22}\text{ kg}7.35×1022 kg
  • Gravitational constant G=6.67×10−11 N m2 kg−2G = 6.67 \times 10^{-11}\text{ N m}^2\text{ kg}^{-2}G=6.67×10−11 N m2 kg−2)

2.0×1020 N2.0 \times 10^{20}\text{ N}2.0×1020 N

2.0×1026 N2.0 \times 10^{26}\text{ N}2.0×1026 N

7.6×1028 N7.6 \times 10^{28}\text{ N}7.6×1028 N

3.0×1030 N3.0 \times 10^{30}\text{ N}3.0×1030 N

Gravitational fields (A-level only) Questions

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