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If W is the weight of a satellite on the...

If `W` is the weight of a satellite on the surface of the earth, then the energy required to lauch that satellite from the surface of earth into a circular orbit of radius `3R` is (here `R` is the radius of the earth)

A

5WR/6

B

6WR/5

C

2WR/3

D

3WR/2

Text Solution

Verified by Experts

The correct Answer is:
A
W= Total energy is orbit - gravitational potential energy on surface of planet.
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NARAYNA-GRAVITATION-EXERCISE -I (H.W.)
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  2. Three particles each of mass m are palced at the corners of an equilat...

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  3. If W is the weight of a satellite on the surface of the earth, then th...

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  4. A body of mass m is lifted from the surface of earth of height equal t...

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  5. An object of mass 2 Kg is moved from infinity to a poitn P. Initially ...

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  6. If mass of the earth is M, radius is R, and gravitational constant is ...

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  7. A body of mass m is placed on the earth surface is taken to a height o...

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  8. A body is released from a height 5R where R is the radius of the earth...

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  9. The difference in PE of an object of mass 10 kg when it is taken from ...

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  10. If the gravitational potential energy of a body at a distance r from t...

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  11. The escape velocity of an object on a planet whose radius is 4 times t...

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  12. The escape velocity of a sphere of mass m is given by

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  13. A body is projected up with a velocity equal to 3//4th of the escape v...

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  14. A spacecraft is launched in a circular orbit very close to earth. What...

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  15. If the escape velocity on the earth is 11.2km-s^-1, its value for a pl...

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  16. The escape velocity of a body from earth's surface is ve. The escape v...

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  17. The escape velocity of a body from the surface of the earth is V(1) an...

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  18. The ratio of the orbital speeds of two satellites of the earth if the ...

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  19. An artificial satellite is revolving in a circular orbit at height of ...

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  20. The mean radius of the orbit of a satellite is 4 times as great as tha...

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