Gravitation questions
1239 published questions with worked solutions.
- A rocket has to be launched from earth in such a way that it never returns. If E is the minimum energy delivered by the rocket...
- A spaceship orbits around a planet at a height of 20 km from its surface. Assuming that only gravitational field of the planet...
- A body of mass m is moving in a circular orbit of radius R about a planet of mass M. At some instant, it splits into two equal...
- Take the mean distance of the moon and the sun from the earth to be 0.4 10^6 km and 150 10^6 km respectively. Their masses are 8...
- A test particle is moving in a circular orbit in the gravitational field produced by a mass density (r) = K r^2 . Identify the...
- The value of acceleration due to gravity at Earth's surface is 9.8 ms^ -2 . The altitude above its surface at which the...
- The energy required to take a satellite to a height 'h' above Earth surface (radius of Earth = 6.4 10^ 3 km) is E_1 and kinetic...
- Two satellites, A and B, have masses m and 2m respectively. A is in a circular orbit of radius R, and B is in a circular orbit of...
- A satellite of mass M is in a circular orbit of radius R about the centre of the earth. A meteorite of the same mass, falling...
- A straight rod of length L extends from x = a to x = L + a. The gravitational force it exerts on a point mass 'm' at x = 0, if...
- Two stars of masses 3 10^ 31 kg each, and at distance 2 10^ 11 m rotate in a plane about their common centre of mass O. A...
- A satellite is moving with a constant speed v in circular orbit around the earth. An object of mass 'm' is ejected from the...
- The ratio of the weights of a body on the Earth's surface to that on the surface of a planet is 9 : 4. The mass of the planet is...
- A box weighs 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator...
- Planet A has mass M and radius R. Planet B has half the mass and half the radius of planet A. if the escape velocities from the...
- A body A of mass m is moving in a circular orbit of radius R about a planet. Another body B of mass m 2 collides with A with a...
- The mass density of a planet of radius R varies with the distance r from its centre as (r)= _0 (1- r^2 R^2 ). Then the...
- Correct formula for height of a satellite from earths surface is:
- A 90 kg body placed at 2R distance from surface of earth experiences gravitational pull of: (R = Radius of earth, g = 10 ms^ -2 )
- A metal wire of uniform mass density having length L and mass M is bent to form a semicircular arc and a particle of mass m is...
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