The weight of an object at the centre of the earth of radius R is:

Zero

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R times the weight at the surface of the earth

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Infinite

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9.8 N

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Solution

The correct option is A Zero
At the center of the earth, the net gravitational force on a body is 0. This is because the body is attracted in all directions equally.

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The weight of an object at the centre of the earth of radius R is :
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The weight of an object at the centre of the earth of radius R is:

The correct option is A ZeroAt the center of the earth, the net gravitational force on a body is 0. This is because the body is attracted in all directions equally.

The correct option is A Zero
At the center of the earth, the net gravitational force on a body is 0. This is because the body is attracted in all directions equally.