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The Variation of Acceleration Due to Gravity on Earth

A body weighs 98N on a spring balance at the North Pole. What will be its weight recorded on the same scale if it is shifted to the equator?

Radius of earth is 6400km

Solution Preview

At the poles, the apparent weight is the same as the true weight.

Thus, 98N = mg = m (9.8 m/s^2)

or m = 10kg. ...

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