Gravitation questions
1239 published questions with worked solutions.
- The rotation period of an earth satellite close to the surface of the earth is 83 min. The satellite is in orbit at a distance of...
- Consider an attractive central force of the form F(r)=- k r^n , k is constant. For a stable circular orbit to exist
- If a planet was suddenly stopped in its orbit, supposed to be circular, find how much time will it take in falling onto the sun.
- A straight rod of length L extends from x=a to x=L+a. Find the gravitational force it exerts on a point mass m at x=0 if the...
- A satellite is revolving round the earth in an orbit of radius r with time period T. If the satellite is revolving round the...
- **Assertion:** If earth suddenly stops rotating about its axis then the value of acceleration due to gravity will become the same...
- An object weighs 10 N at the north pole of the earth. In a geostationary satellite at distance 7R from the centre of earth (of...
- If a satellite is revolving around a planet of mass M in an elliptical orbit of semi-major axis a, find the orbital speed of the...
- The work that must be done in lifting a body of weight P from the surface of the earth to a height h is
- A spaceship is launched into a circular orbit close to the earth's surface. The additional velocity that should be imparted to...
- **Assertion:** Two satellites are following one another in the same circular orbit. If one satellite tries to catch another...
- In a certain region of space, the gravitational field has magnitude I(r)= Kr directed radially inward. Taking the reference point...
- How much energy will be necessary for making a body of 500 kg escape from the earth [g=9.8 ms ^ -2 , radius of earth =6.4 10^6 m]?
- The potential energy of gravitational interaction of a point mass m and a thin uniform rod of mass M and length l, if they are...
- A particle is projected vertically upwards from the surface of earth (radius R_e) with a kinetic energy equal to half of the...
- Imagine a light planet revolving around a very massive star in a circular orbit of radius r with a period of revolution T. If the...
- How high is a man able to jump on the surface of a planet of radius 320 km, having density the same as that of the earth, if he...
- Two satellites S_1 and S_2 revolve around a planet in coplanar circular orbits in the same sense, with periods of revolution 1 h...
- A planet of mass m is revolving round the sun (of mass M). Its distance from the sun at apogee is r_A and at perigee is r_P. v_A...
- **Assertion:** A body becomes weightless at the centre of the earth. **Reason:** As the distance from the centre of earth...
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