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A body projected from the surface of the...

A body projected from the surface of the earth attains a height equal to the radius of the earth. The velocity with which the body was projected is

A

`sqrt(("GM")/("R"))`

B

`sqrt((2"GM")/("R"))`

C

`sqrt(("5GM")/(4"R"))`

D

`sqrt((3"GM")/("R"))`

Text Solution

Verified by Experts

The correct Answer is:
A
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MOTION-GRAVITATION-Exercise - 1 (Section - A :- Newtons Law of Gravitation & Gravitational Field, Potential and Potential Energy) 
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  11. Gravitational potential difference between surface of a planet and a p...

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  12. If M(e) is the mass of earth and M(m) is the mass of moon (M(e)=81 M(m...

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  13. The gravitational potential energy is maximum at :

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  15. A body projected from the surface of the earth attains a height equal ...

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  16. The gravitational potential energy of a body at a distance r from the ...

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  17. A particle falls towards the earth from inifinity. The velocity with w...

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  18. A projectile of mass m is thrown vertically up with an initial velocit...

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  19. Two small and heavy spheres, each of mass M, are placed a distance r a...

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