Consider a unigorm annular sphere of density p and internal radius 2m an external radius 4m. The graviational field strength at a point at a distance r=3 m, from the centre of shaper is :

A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is

A solid sphere of mass M and radius R is surrounded by a concentric shell of equal mass M and radius 3R . The gravitational field at a point P_(1) at a distance r_(1)=2R from the centre is I_(1) and a point P_(2) at distance r_(2)=4R from the centre is I_(2) The ratio (I_(2))/(I_(1))

A uniform solid of valume mass density rho and radius R is shown in figure. (a) Find the gravitational field at a point P inside the sphere at a distance r from the centre of the sphere. Represent the gravitational field vector vec(l) in terms of radius vector vec(r ) of point P. (b) Now a spherical cavity is made inside the solid sphere in such a way that the point P comes inside the cavity. The centre is at a distance a from the centre of solid sphere and point P is a distance of b from the centre of the cavity. Find the gravitational field vec(E ) at point P in vector formulationand interpret the result.

A uniform solid of valume mass density rho and radius R is shown in figure. (a) Find the gravitational field at a point P inside the sphere at a distance r from the centre of the sphere. Represent the gravitational field vector vec(l) in terms of radius vector vec(r ) of point P. (b) Now a spherical cavity is made inside the solid sphere in such a way that the point P comes inside the cavity. The centre is at a distance a from the centre of solid sphere and point P is a distance of b from the centre of the cavity. Find the gravitational field vec(E ) at point P in vector formulationand interpret the result.

Find the intensity of gravitational field at a point lying at a distance x from the centre on the axis of a ring of radius a and mass M .

Find the intensity of gravitational field at a point lying at a distance x from the centre on the axis of a ring of radius a and mass M .

A sphere of radius 2R and mas M has a spherical cavity of radius R as shown in the figure. Find the value of gravitational field at a point P at a distance of 6R from centre of the sphere.

A sphere of radius 2R and mas M has a spherical cavity of radius R as shown in the figure. Find the value of gravitational field at a point P at a distance of 6R from centre of the sphere.

A particle of mass M is placed at the centre of a uniform spherical shell of equal m as and radius a. Find the gravitational potential at a point P at a distance a/2 from the centre.

A solid sphere of radius a and mass m is surrounded by cocentric spherical shell of thickness 2a and mass 2m the gravitational field at a distance 3a from their centres is