If the value of g acceleration due to gravity at earth surface is . Its value in at the centre of the earth, which is assumed to be a sphere of radius metre and uniform mass density is |
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a) |
5 |
b) |
c) |
d) |
Zero |

If the value of g acceleration due to gravity at earth surface is . Its value in at the centre of the earth, which is assumed to be a sphere of radius metre and uniform mass density is |
|||||||

a) |
5 |
b) |
c) |
d) |
Zero |

1 Answer

127 votes

Let the gravitational force on a body mass at due to moon of mass and earth of mass be zero, where and . Then, or or On solving; |

127 votes

127