A uniform solid sphere of mass `m` and radius `r` is suspended symmetrically by a uniform thin spherical shell of radius `2r` and mass `m`.

A uniform solid sphere of mass M and radius a is surrounded symmetrically by a uniform thin spherical shell of equal mass and radius 2a.Find the gravitational field at a distance a. 3/2 a from the center

A uniform solid sphere of mass M and radius a is surrounded symmetrically by a uniform thin spherical shell of equal mass and radius 2a. Find the gravitational field at a distance a). 3/2 a from the centre , b). 5/2 as from the centre.

A uniform solid sphere of mass M and radius a is surrounded symmetrically by a uniform thin spherical shell of equal mass and radius 2a.Find the gravitational field at a distance a. 3/2 a from the center , b. 5/2 a from the center.

A solid sphere of mass 'M' and radius 'a' is surrounded by a uniform concentric spherical shell of thickness 2a and mass 2M. The gravitational field at distance '3a' from the centre will be :

A uniform sphere of mass M and radius R is surrounded by a concentric spherical shell of same mass but radius 2R. A point mass is kept at a distance x ( gt R) in the region bounded by spheres as shown in the figure . The net gravitational force on the particle is

A uniform sphere of mass M and radius R is surrounded by a concentric spherical shell of same mass but radius 2R. A point mass is kept at a distance x ( gt R) in the region bounded by spheres as shown in the figure . The net gravitational force on the particle is

A uniform solid sphere of mass m and radius R is suspended in vertical plane from a point on its periphery. The time period of its oscillation is