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In Box 10-1, we calculated the tidal force that Earth exerts on two 1 kg rocks...

  1. In Box 10-1, we calculated the tidal force that Earth exerts on two 1 kg rocks located on the near and far sides of the Moon. We assumed that the Earth-Moon distance was equal to its average value. Repeat this calculation
    (a) for the Moon at perigree and
    (b) for the Moon at apogee.
    (c) What is the ratio of the tidal force on the rocks at perigree to the tidal force at apogee?

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