Volume 1

For a uniform ring of mass M and radius R at its centre For a uniform ring of mass M and radius R at its centre September 19, 2020 Category: Arihant Physics by D.C Pandey , Chapter 10 - Gravitation , Volume 1 ,

At what depth below the surface of the earth acceleration due to gravity will be half of its value at 1600 km above the surface of the earth ? At what depth below the surface of the earth acceleration due to gravity will be half of its value at 1600 km above the surface of [...]

The angular velocity of rotation of star (of mass M and radius R) at which the matter will start to escaping from its equator is The angular velocity of rotation of star (of mass M and radius R) at which the matter will start to escaping from its equator is September 19, 2020 Category: Arihant [...]

The height above the surface of the earth where acceleration due to gravity is 1/64 of its value at surface of the earth is approximately. The height above the surface of the earth where acceleration due to gravity is 1/64 of its value at surface of the earth is approximately. September 19, 2020 Category: Arihant [...]

A mass M is split into two parts m and (M−m), which are, then separated by a certain distance. What ratio of m/M maximizes the gravitational force between the two parts ? A mass M is split into two parts m and (M−m) then separated by a certain distance. What ratio of m/M maximizes the [...]

If M is the mass of the earth and R its radius, the ratio of the gravitational acceleration and the gravitational constant is If M is the mass of the earth and R its radius the ratio of the gravitational acceleration and the gravitational constant is September 19, 2020 Category: Arihant Physics by D.C Pandey [...]

Suppose a vertical tunnel is dug along the diameter of the earth, assumed to be a sphere of uniform mass density ρ. If a body of mass m is thrown in this tunnel, its acceleration at a distance y from the centre is given by: assumed to be a sphere of uniform mass density ρ. [...]

A satellite is revolving round the earth with orbital speed v0. If it is imagined to stop suddenly, the speed with which it will strike the surface of the earth would be (ve = escape speed of a body from earth’s surface) A satellite is revolving round the earth with orbital speed v0. If it [...]

Two spheres of masses m and 2m are separated by distance d. A particle of mass m5 is projected straight from 2m towards m with a velocity v0. Which of the following statements is correct ? Two spheres of masses m and 2m are separated by distance d. A particle of mass m5 is projected [...]

Let E be the energy required to raise a satellite to height h above earth’s surface and E’ be the energy required to put the same satellite into orbit at that height. Then E/E’ is equal to Let E be the energy required to raise a satellite to height h above earth's surface and E' [...]