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Class XI Physics Gravitation 9

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Question 1

Two spherical bodies of mass M and 5M and radii R and 2R respectively are released in free space with initial separation between their centers equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the smaller body just before collision is

Question 2

The mass of spaceship is 1000 kg. It is to be launched from the earth’s surface out into free space. The value of ‘g’ and ‘R’ (radius of earth) are 10 m/s² and 6400 km respectively. The required energy for this work will be

Question 3

A satellite of mass M is orbiting in an orbit of radius R. Workdone by gravity per revolution on the satellite is given by:

Question 4

The ratio of the energy required to raise a satellite upto a height R (where R is the radius of earth) from the surface of the earth to the energy required to put it into an orbit at a height 2R from the surface of the earth is:

Question 5

What is the correct expression for Binding energy of a satellite

Question 6

A satellite of mass m is orbiting around earth at a height h above the surface of the earth. Mass of earth is M and it’s radius is R. The angular momentum is independent of which of the following terms:

Question 7

The escape velocity of a body depends upon mass as:

Question 8

An Electron moves in a circular orbit of radius R at a distance from a proton with kinetic energy E. To escape to infinity, the energy which must be supplied to the electron is:

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Jul 31JEE & BITSAT