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The Variation of Acceleration Due to Gravity on Earth

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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

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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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