MEDIUM
NEET
IMPORTANT
Earn 100
Which of the following curve expresses the variation of gravitational potential with distance for a hollow sphere of radius :
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Important Questions on Gravitation
HARD
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IMPORTANT
The gravitational potential difference between the surface of a planet and a point situated at a height of above its surface is . If the gravitational field is uniform, then the work done in taking a body up to height above the surface will be:
EASY
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IMPORTANT
If is the mass of the earth and is the mass of the moon , then the potential energy associated with the object of mass situated at a distance from the center of the earth and from the center of the moon is,
EASY
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A missile is launched with a velocity less than the escape velocity. The sum of kinetic energy and potential energy is :
HARD
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A body attains a height equal to the radius of the earth when projected from the earth’s surface. The velocity of the body with which it was projected is:
EASY
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The gravitational potential energy of a body at a distance from the center of the earth is . The gravitational force at that point is,
HARD
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IMPORTANT
A projectile of mass is thrown vertically up with an initial velocity from the surface of the earth (mass of earth). If it comes to rest at a height , the change in its potential energy is:
MEDIUM
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IMPORTANT
Two small and heavy spheres, each of mass , are placed at a distance apart on a horizontal surface. The gravitational potential at the mid point on the line joining the centre of spheres is
MEDIUM
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IMPORTANT
The potential energy of a body at the surface of a planet is , then escape velocity will be:
