Author: Physics Notebook

Acceleration due to gravity near the polar region is greater than at the equatorial region: The shape of the earth is not perfectly spherical. The polar radius is less than that of the equatorial radius of the earth because the earth is flattened at the poles. The acceleration due to gravity at the surface of…

Effect of altitude on g: Let us consider is the acceleration due to gravity on the surface of the earth. The mass of the earth is and the radius is . Then the gravitational force on a body of mass , placed on earth’s surface, exerted by the earth is Where is the gravitational constant.…

Acceleration due to gravity (g): The acceleration created in a body, which is falling freely under the action of gravity of earth, is called acceleration due to gravity. It is denoted by . The value of is in c.g.s. system. 32 in F.P.S. system and 9.8 in S.I. system. Let us consider the mass of…

Gravitational potential at a point on the axis of a homogeneous cylinder: Let us consider a solid homogeneous cylinder of radius , length and uniform mass density . There is a point on the axis of the cylinder at a distance from the face of the cylinder. We want to calculate the gravitational potential and…

Let us consider a uniform ring of radius with centre at . Let a point is on the axis of the ring, at a distance from the centre of the ring. So the Gravitational Intensity at the point due to the ring is, , where, is the total mass of the ring, is the gravitational…

Gravitational potential and gravitational intensity at a point on the axis of the uniform ring: Let us consider a uniform ring of radius . There is a point on the axis of the ring at a distance from the centre of the uniform ring as shown in the adjoining Fig. 1. We want to calculate…

Gravitational potential and inensity at a point on the axis of a circular disk or plate: Let us consider a uniform circular disk of radius . Let there is a point on the axis of the circular disc at a distance r from the centre of the disc. Now we want to calculate gravitational potential…

Gravitational potential and intensity due to a hollow sphere: (i) At a point outside the hollow sphere: Let us consider a hollow sphere of inner radius and outer radius (where > ) of mass and density . Now consider a point at a distance from the centre of the hollow sphere. We are going to…

Gravitational Intensity due to a solid sphere: Gravitational intensity at a point in a gravitational field is defined as the attractive force experienced by a unit mass placed at that point. READ IN DETAIL. (i)At a point outside the sphere: Gravitational potential at a point outside the sphere of radius at a distance from the centre of…

Gravitational potential due to a homogeneous solid sphere: The amount of work done in bringing a unit mass from infinity to any point in the gravitational field is called the gravitational potential at that point. READ IN DETAILS (i) When the point is ouside the sphere: Let us consider a solid sphere of radius and…