Two concentric shells of uniform density of mass `M_(1)` and `M_(2)` are situated. The forces experienced by a particle of mass m when palced at positions `A,B` and `C` respectively are given OA =p,OB = q and OC =r .
.

Options

A. `zero,G(M_(1)m)/(q^(2))`and `G((M_(1)+m_(2))m)/(p^(2))`
B. `G((m_(1)+M_(2)m))/(p^(2))and G((M_(1)+m_(2))m)/(q^(2))andG(M_(1)m)/(r^(2))`
C. `G(M_1m)/q^2, G(M_1m)/q^2` and zero
D. `(G(M_1+M_2)m)/p^2, G(M_1m)/q^2` and zero

Answer

D