Arihant Physics by D.C Pandey

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' [...]

A body which is initially at rest at a height R above the surface of the earth of radius R, falls freely towards the earth, then its velocity on reaching the surface of the earth is A body which is initially at rest at a height R above the surface of the earth of radius [...]

The ratio of the energy required to raise a satellite to a height h above the earth surface to that required tom put it into the orbit is : The ratio of the energy required to raise a satellite to a height h above the earth surface to that required tom put it into the [...]

The orbital angular momentum of a satellite revolving at a distance of ′r ′ from the center is ′L ′of the distance is increased to 16r, then the new angular momentum will be The orbital angular momentum of a satellite revolving at a distance of ′r ′ from the center is ′L ′of the distance [...]

Two identical thin rings each of radius R are coaxially placed at a distance R. If the rings have a uniform mass distribution and each has mass m1 and m2 respectively, then the work done in moving a mass m from centre of one ring to that of the other is then the work done [...]