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The mass of a planet is six times that o...

The mass of a planet is six times that of the earth. The radius of the planet is twice that of the earth. It's the escape velocity from the earth is `v`, then the escape velocity from the planet is:

A

`sqrt(3)v_(e )`

B

`sqrt(2)v_(e )`

C

`v_(e )`

D

`sqrt(5)v_(e )`

Text Solution

Verified by Experts

The correct Answer is:
A
Escape velocity from the surface of earth is
`V_(e )=sqrt(2GM)/(R )`
Escape velocity from the surface of planet is
`V_(p)=sqrt(2G(6M))/(2R)=sqrt(3)v_(e)`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-GRAVITATION -Exercise 1
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  2. A satellite moves around the earth in a circular orbit with speed v. I...

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  3. The field which artifical satellite are useful stelites are useful f...

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  4. A lauching vehicle carrying an artificial satellite of mass m is set f...

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  5. A body is orbiting around earth at a mean radius which is two times a...

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  6. The time period of an earth satellite in circular orbit is independent...

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  7. The radius of the orbit of a satellite is r and its kinetic energy i...

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  8. The pitentil energy of a satellite is given as PE= lambda(KE) whe...

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  9. A 400 kg satellite is in a circular orbit of radius 2 R(E) about ...

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  10. The time period of a geostationary satellite at a height 36000 km ...

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  11. A simple pendulum has a time period T(1) on the earth 's surface ...

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  12. The mass of a planet is six times that of the earth. The radius of the...

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  13. For a body to escape from earth, angle from horizontal at which it sho...

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  14. The escape velocity form the earth is 11 kms^(-1) the esacpe veloc...

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  15. The ratio of the radii of the planets P(1) and P(2) is a the ratio ...

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  16. The mass of the moon is 7//81 th of earth 's mass and its radius is 1...

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  17. The escape velocity of a body from the earth is V(e) if the radius ...

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  18. What is the escape velocity for body on the surface of planet on w...

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  19. What is a period of revolution of the earth satellite ? Ignore the hei...

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  20. Two spherical planets P and Q have the same uniform density rho, masse...

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