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A particle of mass M is situated at the centre of a spherical shell of same mass and radius R. The gravitational potential at a point situated at 5 distance from the centre will be
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The mass of the earth is 
and that of the moon is 
. The potential energy of the system is 
. The mean distance between the earth and moon is 
.
The mass of the earth is and that of the moon is . The potential energy of the system is . The mean distance between the earth and moon is .
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Two spheres each of mass M and radius R are separated by a distance of r. The gravitational potential at the midpoint of the line joining the centres of the spheres is
Two spheres each of mass M and radius R are separated by a distance of r. The gravitational potential at the midpoint of the line joining the centres of the spheres is
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A particle of mass m is placed at the centre of a uniform spherical shell of mass 3 m and radius R. The gravitational potential on the surface of the shell is
A particle of mass m is placed at the centre of a uniform spherical shell of mass 3 m and radius R. The gravitational potential on the surface of the shell is
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The change in potential energy when a body of mass m is raised to a height n RE from earth's surface is (RE. radius of the earth)
The change in potential energy when a body of mass m is raised to a height n RE from earth's surface is (RE. radius of the earth)
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Four particles each of mass m are placed at the vertices of a square of side l. The potential at the centre of square is
Four particles each of mass m are placed at the vertices of a square of side l. The potential at the centre of square is
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Four particles each of mass m are placed at the vertices of a square of side . The potential energy of the system is
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A body of mass m is placed on earth surface which is taken from earth surface to a height of h=3 R, then change in gravitational potential energy is
A body of mass m is placed on earth surface which is taken from earth surface to a height of h=3 R, then change in gravitational potential energy is
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Two oppositely rotating satellites of same mass are launched in the same orbit round the earth. The collide idealistically. What is the ratio of gravitational potential energy before and after collision?
Two oppositely rotating satellites of same mass are launched in the same orbit round the earth. The collide idealistically. What is the ratio of gravitational potential energy before and after collision?
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The potential energy of interaction between the semi-circular ring of mass M and radius R1 and the particle of mass M placed at the centre of curvature of the semi-circular arc is:
The potential energy of interaction between the semi-circular ring of mass M and radius R1 and the particle of mass M placed at the centre of curvature of the semi-circular arc is:
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The gravitational potential energy of a body of mass 'm’ at the earth's surface -mgRe. Its gravitational potential energy at a height Re from the earth's surface will be (Here Re is the radius of the earth)
The gravitational potential energy of a body of mass 'm’ at the earth's surface -mgRe. Its gravitational potential energy at a height Re from the earth's surface will be (Here Re is the radius of the earth)
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A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is
A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is
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A shell of mass M and radius R has a point mass m placed at a distance r from its centre. The gravitational potential energy U(r) vs r will be
A shell of mass M and radius R has a point mass m placed at a distance r from its centre. The gravitational potential energy U(r) vs r will be
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The intensity of gravitational field at a point situated at a distance of 8000 km from the centre of the earth is 6 N / kg. The gravitational potential at that point is - (in Joule/ kg)
The intensity of gravitational field at a point situated at a distance of 8000 km from the centre of the earth is 6 N / kg. The gravitational potential at that point is - (in Joule/ kg)
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A projectile is launched from the surface of Earth with a velocity less than the escape velocity. Its total mechanical energy is
A projectile is launched from the surface of Earth with a velocity less than the escape velocity. Its total mechanical energy is
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Particles of masses 2 M, m and 3 M are respectively at points A, B and C with AB=1/4(BC). m is much-much smaller than M and at time t=0, they are all at rest. At subsequent times before any collision takes place
Particles of masses 2 M, m and 3 M are respectively at points A, B and C with AB=1/4(BC). m is much-much smaller than M and at time t=0, they are all at rest. At subsequent times before any collision takes place
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