Question

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Answer 1

Answer:

We learn about the principle of transferring heat energy from one body to another.

principle of heat energy exchange states that the heat energy lost by hot object is always equal to heat gained by cold object provided that the system of both the object is isolated.

At the centre of Earth, the force due to upper half of the Earth will cancel the force due to lower half.... therefore when force is zero then g has to be zero.

Explanation:

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Answer 2

2: At the centre of the earth, the force due to upper half of the earth will cancel the force due to lower half. ........Therefore,when F= 0,then g has to be 0. Thus , the value of g is zero at the centre of earth.

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