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Gravitation — BITSAT Physics PYQs

26 previous year questions from Gravitation with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

Gravitation — BITSAT Physics PYQs

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 i

The distance between Sun and Earth is R . The duration of year if the distance between Sun and Earth becomes 3 R will be:

For a particle inside a uniform spherical shell, the gravitational force on the particle is

The kinetic energy of a satellite in its orbit around the earth is E . What should be the kinetic energy of the satellite so as to enable it to escape from the gravitational pull o

Two identical particles each of mass ' m ' go round a circle of radius a under the action of their mutual gravitational attraction. The angular speed of each particle will be:

If V is the gravitational potential due to sphere of uniform density on it's surface, then it's value at the center of sphere will be:

Two planets A and B of radii R and 1.5 R have densities and / 2 respectively. The ratio of acceleration due to gravity at the surface of B to A is :

Suppose the law of gravitational attraction suddenly changes and becomes an inverse cube law i.e. F 1 r³ , but still remaining a central force. Then

A point particle is held on the axis of a ring of mass m and radius r at a distance r from its centre C. When released, it reaches C under the gravitational attraction of the ring.

The escape velocity from a planet is v_ e . A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface. When the body reaches the centre of t

If the the earth is at one-fourth of its present distance from the sun, the duration of year will be

The potential energy of a satellite of mass m and revolving at a height R _ e above the surface of earth where R _ e = radius of earth, is

The escape velocity from the surface of earth is v e . A body is projected with velocity 3 v e . With what constant velocity will it move in the inter planetary space?

An asteroid of mass m is approaching earth, initially at a distance 10 R e with speed v i . It hite oarth with a speed v f , R e and M e are radius and mass of earth ) , then

A spherically symmetric gravitational systom of particles has mass density &#961; = &#961; 0 &#160;for&#160; r &#8804; R 0 &#160;for&#160; r &#62; R where, &#961; 0 is a constant.

A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km . Then, the time period of a sky satellite orbiting a few 100 km above the earth&#39;s surf

What should be the velocity of rotation of earth due to rotation about its own axis so that the weight of a person becomes 3 5 of the present weight at the equator. Equatorial radi

Kepler's third law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e. T ²=

An artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of the escape velocity from the earth. The height (h) of the satelli

There is a shell of mass M and density of the shell is uniform. The work done to take a point mass from point A to B is [ AB = r ]

If the radius of the earth were to shrink by one per cent, its mass remaining the same, the value of g on the earth's surface would

A man of mass m starts falling towards a planet of mass M and radius R . As he reaches near to the surface, he realizes that he will pass through a small hole in the planet. As he

Geo-stationary satellite is one which

Suppose the gravitational force varies inversely as the nth power of distance. Then the time period of a planet in circular orbit of radius ' R ' around the sun will be proportiona

Two planets A and B have the same material density. If the radius of A is twice that of B , then the ratio of the escape velocity v _ A / v _ B is

The rotation of the earth having radius R about its axis speeds upto a value such that a man at latitude angle 60^ feels weightless. The duration of the day in such case will be:

A spherically symmetric gravitational systom of particles has mass density ρ = ρ 0 for r ≤ R 0 for r > R where, ρ 0 is a constant.

A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km . Then, the time period of a sky satellite orbiting a few 100 km above the earth's surf