A wall clock uses a vertical spring mass system to measure the time. Each time the mass reaches an extrem position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will

Options

A. run slow
B. run fast
C. stop working
D. give correct time

Answer

D

Explanation

If it gives correct time at equator, it will give correct time at poles also because the time period of spring-mass system is independent of g.