The earth\'s acceleration due to gravity varies from 9.780 m/s2 at the equator t

Question

The earth's acceleration due to gravity varies from

9.780 m/s2 at the equator to 9.832 m/s2 at the poles. A pendulum whose length is precisely 1.000 m can be used to measure g. Such a device is called a gravimeter.

A)

How long do 100 oscillations take at the equator?

Express your answer to four significant figures and include the appropriate units.

t= _____?

B)

How long do 100 oscillations take at the north pole?

Express your answer to four significant figures and include the appropriate units.

t = _____?

C)  

Explanation / Answer

T = 2pisqrt(L/g)

A) T = 2.009 s

100 oscillations = 100 *T = 200.9 s

B) T = 2.003 s

100 oscillations = 100*T = 200.3 s

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