Question

If the value of 'g' acceleration due to gravity, at earth surface is 10m /s² , its value in 2 m /s² at the centre of the earth, which is assumed to be a sphere of radius 'R' metre and uniform mass density is

Options :

  1. 5

  2. 10/R

  3. 10/2R

  4. Zero

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Answer :

Zero

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