Two concentric spherical shells have masses M_1, M_2 and radii R_1, R_2 (R_1 lt R_2). The force exerted by this system on a particle of mass m. If it is placed at a distance ((R_1+R_2)/2) from the centre.

Two concentric spherical shells have masses M_1, M_2 and radii R_1, R_

1.	Two concentric spherical shells have masses M_1, M_2 and radii R_1, R_2 (R_1 lt R_2). The force exerted by this system on a particle of mass m. If it is placed at a distance ((R_1+R_2)/2) from the centre.
Answer» SOLUTION :The GRAVITATIONAL force on .m. DUE to the shell of `M_2` is zero. The gravitational force on .m. due `=(GM_1m)/((R_1+R_2)/2)^2 =(4GM_1m)/(R_1+R_2)^2`