Question

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

• 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

Answer 1

The correct option is B A watch having main spring to keep it going

In a pendulum clock, the time period depends on the value of g, while in a spring watch, the time period is independent of the value of g. In an orbiting satellite, the pendulum will experience free fall and g=0. Hence, its time period will be infinite or it will not oscillate.