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Potential energy of a 3kg body at the su...

Potential energy of a 3kg body at the surface of a planet is `-54 J`, then escape velocity will be :

A

18 m/s

B

162 m/s

C

36 m/s

D

6 m/s

Text Solution

Verified by Experts

The correct Answer is:
D
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MOTION-GRAVITATION-Exercise - 1 (Section - C :- Keplers Law, Orbital Velocity, Escape Velocity + Geo. Stationary Satellites )
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  2. Escape velocity of a body 1 kg mass on a planet is 100 ms^(-1). Gravit...

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  3. The ratio of radii of two satellites is p and the ratio of their accel...

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  4. Escape velocity of a rocket is 11.2 km/sec. It is released at an angle...

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  5. The escape velocity for the earth is 11.2 km / sec . The mass of anoth...

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  6. A body is projected vertically upwards from the surface of the earth w...

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  7. Binding energy of moon and earth is :-

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  8. Two artificial satellites A and B are at a distance r(A) and r(B) abov...

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  9. The average radii of orbits of mercury and earth around the sun are 6x...

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  10. A body is dropped by a satellite in its geo-stationary orbit :

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  11. Two ordinary satellites are revolving round the earth in same elliptic...

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  12. Kepler's second law is a consequenc of

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  13. One projectile after deviating from itspath starts movnig round the ea...

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  14. In adjoining figure earth goes around the sun in eliptical orbit on wh...

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  15. Potential energy and kinetic energy of a two particle system under ima...

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  16. A satellite of earth of mass 'm' is taken from orbital radius 2R to 3R...

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  17. If a graph is plotted between T^(2) and r^(3) for a planet, then its s...

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  18. A planet is revolving around the sun. its distance from the sun at apo...

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  19. A satellite launching statian should be

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  20. A spaceship is launched into a circular orbit close to the Earth's sur...

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