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A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth ?

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+4 votes
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in Physics by (69.8k points)

A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth ? 

(1) 150 N (2) 200 N (3) 250 N (4) 100 N

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1 Answer

+4 votes
by (44.8k points)
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Best answer

The correct option is (4) 100 N.

Explanation:

Acceleration due to gravity at a depth d from surface of earth 

Where g = acceleration due to gravity at earth's surface 

Multiplying by mass 'm' on both sides of (1)

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