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The value of g (acceleration due to grav...

The value of `g` (acceleration due to gravity) at earth's surface is `10 ms^(-2)`. Its value in `ms^(-2)` at the centre of the earth which is assumed to be a sphere of radius `R` metre and uniform mass density is

A

5

B

10`//`R

C

`10//2R`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
For inside
`g.=4/3piGpr`
`g.=4/3piGprrArrg.propr`
As `r=0,thereforeg=0`
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