Question

The earth's free-fall acceleration varies from 9.78 m/s2 at the equator to 9.83 m/s2 at the poles, both because the earth is rotating and it's not a perfect sphere. A pendulum whose length is precisely 1.000 m can be used to measure g . Such a device is called a gravimeter.

1. How long do 147 oscillations take at the equator? 295s

2.How long do 147 oscillations take at the north pole? 295s

What kind of instrument could you use to measure the difference between #1 and #2?

Answer 1