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NEET UG PHYSICS MCQ: GRAVITATION

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The velocity with which a projectile must be fired so that it escapes Earth's gravitation does not depend on

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Correct option: B

mass of the projectile

Option B (mass of the projectile) is correct because the escape velocity formula does not include the mass of the projectile.

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If a particle of mass m is moving in a horizontal circle of radius r with a centripetal force

\left( { - K/{r^2}} \right)

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F \propto \frac{1}{r^3}

, but still remaining a central force. Then Two satellites A and B go round a planet P is circular orbits having radii 16 R and 2 R respectively. If the speed of satellite A is

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Statement-2: Because rotation of earth is about polar axis.