Gravitation questions
1239 published questions with worked solutions.
- A body weighs 81 N on the surface of the earth. What is the gravitational force on it due to earth at a height equal to half the...
- Radius of earth is 6 10^ 6 m. Acceleration due to gravity is equal to 9.8 m/s^2 . Gravitational constant G is equal to 6.67 10^...
- Two satellites A and B go round a planet P in circular orbits having radii 4R and R respectively. If the speed of the satellite A...
- The orbital velocity of a satellite very near to the surface of earth is v. What will be its orbital velocity at an altitude 7...
- Two satellites of masses m and 4m orbit the earth in circular orbits of radii 4r and r respectively. The ratio of their orbital...
- The critical velocity of a satellite of mass 100 kg is 20 km/hr. The critical velocity of another satellite of mass 200 kg in the...
- The orbital speed of Jupiter is
- Time period of revolution of a nearest satellite around a planet of radius R is T. Period of revolution around another planet,...
- The time period of a satellite in a circular orbit of radius R is T. The radius of the orbit in which time period is 8 T is
- A satellite is moving very close to a planet of density 8 10^ 3 kg ,m^ -3 . If G=6.67 10^ -11 Nm^2kg^ -2 , then the time period...
- The rotational period of a satellite close to the surface of the earth is 83 minutes. The time period of another earth satellite...
- If the mean distance of Mars from the Sun is 1.525 times that of the earth from the sun, in how many years will Mars complete one...
- Two satellites S_1 and S_2 revolve round a planet in coplanar circular orbits in the same sense. Their periods of revolution are...
- If the earth is at one fourth of its present distance from the sun, the duration of the year will be
- The period of revolution of planet A around the Sun is 8 times that of B. The distance of A from the Sun is n times greater than...
- The increase in gravitational potential energy of an object of mass m raised from the surface of Earth to a height equal to the...
- A satellite of mass m moves around the Earth in a circular orbit with speed v. The potential energy of the satellite is
- v_e and v_p denote the escape velocities from the earth and another planet having twice the radius and the same mean density as...
- A satellite orbiting close to earth surface will escape, if
- The maximum vertical distance through which a full dressed astronaut can jump on the earth is 0.5 m. Estimate the maximum...
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