Gravitation questions
1239 published questions with worked solutions.
- Two particles are projected vertically upward from a point on the surface of the earth with velocities v_1= 2gR 3 and v_2= 4gR 3...
- Three particles, each of mass m=1 kg, are located at the vertices of an equilateral triangle of side a=4 m. At what speed must...
- A satellite of mass 200 kg is in a circular orbit of radius 2R about the earth, where R is the radius of the earth. The energy...
- The radius of a planet is 3000 km. A satellite revolves around it in a circle of radius 4000 km with angular velocity 1.4 10^ -4...
- The energy required to take a satellite to a height h above the Earth's surface (R_e=6.4 10^3 km) is E_a, and the kinetic energy...
- A test particle is moving in a circular orbit in the gravitational field produced by a mass-density (r)= k r^2 , where k is a...
- A small planet is revolving around a very massive star in a circular orbit of radius R, with a period of revolution T. If the...
- A body hanging from a spring stretches it by 1 cm at the earth's surface. How much will the same body stretch the spring at a...
- A rocket has to be launched from the Earth in such a way that it never returns. If E is the minimum energy delivered by the...
- An astronaut whose height is 1.50 m floats "feet down" in an orbiting space shuttle at distance r=6.67 10^6 m from the centre of...
- The SI unit of gravitational potential is
- The S.I. unit of gravitational potential is
- A particle of mass m moves in a horizontal circle under the action of an attractive central force of magnitude F = k/r^2, where k...
- A particle moves in a horizontal circle under an attractive central force of magnitude F=k/r^2. Its total energy is
- A particle of mass m is moving in a horizontal circle of radius r under a centripetal force equal to -K/r^2 (directed towards the...
- A body is acted upon by a constant-magnitude force directed towards a fixed point, such that the magnitude of the force varies...
- What should be the angular velocity of the earth so that a body on its equator becomes weightless? (take g = 10 , ms ^ -2 , R =...
- If a particle of mass m is moving in a horizontal circle of radius r with a centripetal force (-k/r^2), the total energy is
- When the distance between the earth and the sun is halved, the duration of the year will become
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