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The mass of earth is 9 times of that of ...

The mass of earth is 9 times of that of Mars. The radius of the earth is twice that of Mars. The escape velocity on the earth is `12 "kms"^(-1)` , then the escape velocity on the Mars is

A

5.65 `"kms"^(-1)`

B

6 `"kms"^(-1)`

C

7 `"kms"^(-1)`

D

8 `"kms"^(-1)`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-GRAVITATION-Practice Exercise
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  2. The gravitational potential at centre of earth is

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  3. Two particles each of mass 1kg are seperated by a distance of 1m in a ...

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  4. The orbiting time .T. of a surface satellite is given by the relation

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  5. An earth satellite is revolving in a circular orbit of radius 7000km. ...

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  6. These orbital speed of satellite revolving very close to earth

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  7. The escape velocity of a body depends upon its mass .m. as

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  8. A satellite is revolving near the earth's surface, Its orbit velocity ...

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  9. An artificial satellite moving in a circular orbit around the earth ha...

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  10. The K.E. of a satellite is 2MJ. Its total energy is

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  11. The escape velocity of a projectile from the earth.s surface is given ...

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  12. The relation between the escape velocity ve and orbital velocity v0 is...

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  13. Two satellites are at heights h1, h2. The ratio of their orbital angul...

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  14. The KE of a satellite in its orbit around the earth is E. The KE of th...

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  15. For a satellite to attain escape velocity, the percentage increase in ...

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  16. The escape velocity of a body of mass 1kg when projected from the surf...

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  17. The mass of earth is 9 times of that of Mars. The radius of the earth ...

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  18. The escape velocities on the surface of two planets of masses m1 and m...

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  19. If the escape velocity on the earth.s surface is 11.2 "kms"^(-1) , its...

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  20. The escape velocity on a planet is v. If the radius of the planet cont...

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