Gravitation questions
1239 published questions with worked solutions.
- A body is imparted a velocity v from the surface of the earth. If v_0 is the orbital velocity and v_e is the escape velocity, then
- **Assertion:** The speed of revolution of an artificial satellite revolving very near the earth is 8 km/s. **Reason:** Orbital...
- If the diameter of mars is 6760 km and its mass is one-tenth of that of earth. The diameter of earth is 12742 km. If acceleration...
- A planet of mass m (of mars) is revolving round the sun (of mass m_s) in an elliptic orbit. If v is the velocity of the planet...
- Halley's comet has a period of 76 years, and its closest approach to the sun is 8.9 10^ 10 m. The comet's farthest distance from...
- The magnitudes of the gravitational field at distances r_1 and r_2 from the centre of a uniform sphere of radius R and mass M are...
- The gravitational potential on the surface of a planet of radius R and mass M is
- Two satellites S_1 and S_2 revolve around a planet in coplanar circular orbits in the same sense. Their periods of revolution are...
- A particle of mass m is moved from the surface of the earth to a height h. The work done by an external agency to do this is
- A particle of mass m lies at a distance r from the centre of earth (radius R). The force of attraction between the particle and...
- **Assertion:** Orbital velocity of a satellite is greater than its escape velocity. **Reason:** The orbit of a satellite is...
- If the radius of the earth shrinks by 1% without change in its mass, the acceleration due to gravity on the surface of earth will
- A particle is fired vertically upwards from the surface of earth and reaches a height of 6400 km. The initial velocity of the...
- Two identical satellites are at R and 7R away from the earth surface, the wrong statement is (R= radius of earth)
- An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E_0. Its potential...
- **Assertion:** The binding energy of a satellite does not depend upon the mass of the satellite. **Reason:** Binding energy is...
- Two particles each of mass m are moving around a circle of radius R due to their mutual gravitational force of attraction. The...
- An artificial satellite of the earth moves at an altitude h=670 km along a circular orbit. The velocity of the satellite is
- Imagine a new planet having the same density as that of the earth but it is 3 times bigger in size. If the acceleration due to...
- The density of a newly discovered planet is twice that of the earth. The acceleration due to gravity at the surface of the planet...
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