NEET UG PHYSICS MCQ: GRAVITATION

1 Easy

1 of 1

Understanding +4 | -1

Statement-1: There is almost no effect of rotation of earth at poles.
Statement-2: Because rotation of earth is about polar axis.

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Correct option: A

Statement-1 is true, Statement-2 is true

Option A (Statement-1 is true, Statement-2 is true) is correct because the rotation of the Earth has minimal effect at the poles, and this is because the Earth rotates about its polar axis.

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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}}

the speed of the satellite B will be [in m/s] nearly The total energy of satellite moving with an orbital velocity

v

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r

around the earth so as to rotate opposite to each other. If they collide inelastically and stick together as wreckage, the total energy of the system just after collision is The escape velocity of a body on the surface of an imaginary planet which has thrice the radius as of earth and double the mass of earth, is (

{v_e}

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