Gravitation questions
1239 published questions with worked solutions.
- A body weighs 45 N on the surface of the earth. The gravitational force on a body to earth to half the radius of earth will be
- Assuming the earth to be a sphere of uniform density, the acceleration due to gravity inside the earth at a distance of r from...
- 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...
- The mass of a spaceship is 1000 kg. It is to be launched from the earth's surface out into free space. The value of ' g ' and ' R...
- The change in the value of acceleration of earth towards sun, when the moon comes from the position of solar eclipse to the...
- The gravitational field in a region is given by: E = (5N/kg) i + (12N/kg) j If the potential at the origin is taken to be zero,...
- The gravitational field in a region is given by g = (5 i + 12 j ) N kg^ -1 . The change in the gravitational potential energy of...
- Two planets P_1 and P_2 with equal mass have radii R_1 and R_2, respectively, where R_2= R_1 2 . The escape speeds of P_1 and P_2...
- In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius R is proportional to:
- A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius R (R << L). A star outside the...
- An astronaut of mass m is working on a satellite orbiting the earth at a distance h from the earth's surface. The radius of the...
- If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the speed with which the earth would...
- If a person with a spring balance and a body hanging from it goes up and up in an aeroplane, then the reading of the weight of...
- Which of the following statements about the gravitational constant is true? **[WB-JEE 2006]**
- If a planet of given density were made larger (keeping its density unchanged) its force of attraction for an object on its...
- Two balls, each of radius R, equal mass and density, are placed in contact, then the force of gravitation between them is...
- Two spheres of mass m and M are situated in air and the gravitational force between them is F. The space around the masses is now...
- g_e and g_p denote the acceleration due to gravity on the surface of the earth and another planet whose mass and radius are twice...
- The ratio of radii of earth to another planet is 2 3 and the ratio of their mean densities is 4 5 . If an astronaut can jump to a...
- If g is the acceleration due to gravity on the surface of earth, its value at a height equal to double the radius of earth is
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