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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



Question ID - 54568 | SaraNextGen Top Answer

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
Answer Key / Explanation : (d) -

(d)

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