Question

Explain why value of g on zero at the centre of the earth... Answer :- Given : At the centre of earth height is equal to radius.. h = R gd = g ( 1 - d / R) gd = g ( 1- R/ R) gd = g (1- 0 ) gd = g (0) gd = 0 And hence at the centre of earth value of g become zero

Answer 1

Answer:

Explanation:

acceleration due to gravity varies directly proportional to distance from center, i.e. r

But varies  

r  

2

 

1

​  

 when r>R

expression is given by  g=  

r  

2

 

GM

​  

 if r>R.

and g=  

R  

3

 

GMr

​  

 if r

so when r=0 then g will be zero.