Question

A body of mass 10 kg is taken from the surface of the earth to the centre of the earth. Find its weight at the centre of the earth?

Answer 1

At the centre of the earth the value of acceleration due to gravity is zero because.


g=GM/R^2

M and R (Mass(of the earth below the body)and radius(distance between the body and the centre of the earth)) Both become zero at the centre.



So the weight,that is, mass × acceleration due to gravity becomes zero.

w=m×g
w=0.
Weight is zero at the centre of the earth.

Thank you