why does the weight become zero at the centre of the earth?
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Answer:
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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Answer:
The formula for weight is
W=M×g
We take the formula for calculating gravitational force as
F = G M× m ÷ r²
Gravity works between centre of mass of the objecy.
Now when we are at centre the distance is zero
Therefore the force is 0.
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