At the centre of Earth, what is the value of weight of a body of mass m
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The weight of a body placed at the centre of the earth is zero. This is because the mass at the exact cenrte of the earth is zero. Gravitational force exists only if there is mass in the object.
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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 at the centre of the earth, w = mg
At the centre of earth, g=0
Weight=m x 0
Weight =0
At the acceleration due to gravity is zero at the centre of earth, weight of a body is zero at the centre of earth.
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