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Let a planet revolving close to the eart...

Let a planet revolving close to the earth, Obtain relation between escape speed and orbital speed.

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`implies v_0 = sqrt((GM_e)/R_e)` and escape speed `ve= sqrt((24M_e)/R_e)`
`:. v_0/v_e=sqrt((GM_e)/R_exxR_e/(24M_e))`
`:. v_0/v_e=1/sqrt2 " or " v_e=sqrt2v_0`
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KUMAR PRAKASHAN-GRAVITATION-Section - C Objective Questions (VSQs)
  1. Name two factors which determine whether a  planet has an atmosphere o...

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  2. Is the angular velocity of planet dependon mass?

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  3. Let a planet revolving close to the earth, Obtain relation between esc...

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  4. Does speed of planet remain constant in an orbit?

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  5. What is the effect of decreasing the height of a satellite orbiting ar...

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  6. The escape velocity on the surface of earth is 11.2 km/s. What will be...

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  7. Find the kinetic energy needed to project a body of mass m from the su...

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  8. What is the escape velocity from a black hole ?

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  9. As astronaut dropped a spoon from outside spacecraft will the spoon re...

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  10. Give the name of first Indian Astronaut.

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  11. What is the frequency of oscillation of a  pendulum mounted in a lift ...

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  12. Distance of two planets from the sun are 10^11 m and 10^(10) m respec...

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  13. In Bohr’s model, the atomic radius of the first orbit is r. Then, the ...

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  14. If any satellite has kinetic energy 6 xx 10^(9)J , then what its poten...

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  15. A satellite has potential energy -8 xx 10^(9)J, then what is its bindi...

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  16. The ratio between Bohr radii is

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  17. What are the factors on which escape velocity depends on ?

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  18. The period of revolution of a satellite in an orbit becomes 8 times th...

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  19. Why rocket does not have escape energy ?

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  20. Why satellite does not have escape velocity ?

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