my question is from the topic gravitation.But in the chapter and topic column there was no such option.Without filling that it was not proceding, so i have registered that name. 
My question is,
I read a sentence that, Gravitational acceleration decreases with increase in hight and depth.but why depth?why dont we measure depth with negative sign convension?

Asked by alarkhardikar10 | 20th Jul, 2014, 08:32: AM

Expert Answer:

The expression for acceleration due to gravity at a depth d is,

gd = g ( 1 - d/R)

From the above expression it is clear that the value of acceleration due to gravity decrease with increase in depth.

Answered by Sheetal Jalan | 20th Jul, 2014, 10:13: PM