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NEET UG PHYSICS MCQ: GRAVITATION

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The weight of an object in the coal mine, sea level, at the top of the mountain are

{W_1},\;{W_2}\,and\,{W_3}

respectively, then

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Correct option: A

{W_1} < {W_2} > {W_3}

Option A (

{{W_1} < {W_2} > {W_3}}

) is correct because weight decreases both with depth (initially) and with height from the Earth's surface.

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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

6\,m{s^{ - 1}}

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v

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