AIIMS 2003 Physics Escape Velocity MCQ Question
The velocity with which a projectile must be fired so that it escapes earth's gravitation does not depend on
mass of the earth
mass of the projectile
radius of the projectile's orbit
gravitational constant
Correct Answer
Detailed Explanation
For a projectile to leave the gravitational field of the earth, its kinctic energy would bea at least equal to #s potential energy. That is 1 Min _ (26M 5 nv,” = Gs z= Ve Ff where G is the universal gravitational constant, © is the mass of the carth and 2 is the radius of the earth. Hence the escape velocity of a projectile is independent of mass
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