explain why the value of g is zero at the centre of the earth
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The value of g is zero at the centre of the earth because at that centre the mass of earth is equally shared in every directions , so force equally in all directions for a net force is zero.
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Hey mate here is your answer
the value of g changes while going deep inside the earth. it goes on decreasing as we go from the Earth surface towards the earth centre
we shall treat the earth as a sphere of uniform density if we consider a particle of mass M at point P and distance (R-d) from the Earth Centre where R is the radius of the earth and D is the depth below the Earth surface the gravitational force on the particle due to Earth is
F = GmM' / (R-d)^2
answer is continued in attachment ....
the value of g changes while going deep inside the earth. it goes on decreasing as we go from the Earth surface towards the earth centre
we shall treat the earth as a sphere of uniform density if we consider a particle of mass M at point P and distance (R-d) from the Earth Centre where R is the radius of the earth and D is the depth below the Earth surface the gravitational force on the particle due to Earth is
F = GmM' / (R-d)^2
answer is continued in attachment ....
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