First slide

Motion of planets and satellites

Question

In order to find time, the astronaut orbiting in an earth satellite should use

Easy

A

A pendulum clock
B

A watch having main spring to keep it going
C

Either a pendulum clock or a watch
D

Neither a pendulum clock nor a watch

Solution

In pendulum clock the time period depends on the value of g, while in spring watch, the time period is independent of the value of g.

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