The weight of a body at the centre of earth is: (1) half the weight at the surface (2) zero (3) twice the weight at the surface (4) infinite

The weight of a body at the centre of earth is: (1) half the weight at the surface (2) zero (3) twice the weight at the surface (4) infinite
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(2) zero Explanation: Weight of a body is the force with which it is attracted towards the centre of earth. The weight of a body, 'w' of mass `m' is given by: W = mg, where `g is the acceleration due to gravity At the centre of earth, value of 'g' is zero. Therefore, weight of a body is zero at the centre of the earth.
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