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Answer to Question 4
4.
Time, ladies and gentlemen, please! If you took a grandfather (pendulum) clock to
your favourite pub on the moon ('The Half Earth Tavern'?) would it (a)
gain (b)
lose or (c)
keep the same time?
As the pendulum reaches the top of its swing, it is the force of gravity which pulls
it back down. The moon is much smaller than earth and its gravitational pull correspondingly
less (one sixth). Accordingly, the pendulum would move more slowly and the clock would 'lose' time.
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Answer: (b)
a pendulum clock will lose time.