Two concentric shells of masses `M_(1)` and `M_(2)` are concentric as shown. Calculate the gravitational force on m due to `M_(1)` at points P,Q and `R`.

Two concentric spherical shells of masses and radii m_(1), r_(1) and m_(2), r_(2) respectively are as shown. The gravitational field intensity at point P is

Two concentric spherical shells of masses and radii m_(1), r_(1) and m_(2), r_(2) respectively are as shown. The gravitational field intensity at point P is

Consider three concentric shells of masses M_(1),M_(2) and M_(3) having radii a,b and c respectively are situated as shown in Gravitational field at a point located at Q and P is

Two concentric shells of mass m_(1) and m_(2) are situated as shown. Find the force on a particle of mass m when the particles is located at (a) r=r_(1),(b)r=r_(2),(c)r=r_(3) . The distance r is measured from the centre of the shell.

The figure represents two concentric shells of radii R_(1) and R_(2) and masses M_(1) and M_(2) respectively. The gravitational field intensity at the point A at distance a (R_(1) lt a lt R_(2)) is

The figure represents two concentric shells of radii R_(1) and R_(2) and masses M_(1) and M_(2) respectively. The gravitational field intensity at the point A at distance a (R_(1) lt a lt R_(2)) is

Two concentric shells of different mass m_(1) and m_(2) are having a sliding particle of mass m . The forces on the sliding at positions I,II and III are respectively

Two particles of mass m_(1) and m_(2) , approach each other due to their mutual gravitational attraction only. Then