Question

Assuming the earth to be a sphere of uniform density, the acceleration due to gravity inside the earth at a distance of $r$ from the centre is proportional to

• A. $r$
• B. $r^{-1}$
• C. $r^2$
• D. $r^{-2}$

Answer 1

Answer: (A)

$r$

Answer 2

Acceleration due to gravity at depth d from the surface of the earth or at a distance r from the centre ????of the earth $g' = \frac{4}{3}\pi\rho Gr$ Hence $g??propto r$