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The work done liftting a particle of mas...

The work done liftting a particle of mass 'm' from the centre of the earth to the surface of the earth is

A

`-mgR`

B

`1/2mgR`

C

zero

D

`mgR`

Text Solution

Verified by Experts

The correct Answer is:
B
`W=GPE_(2)-GPE_(1), DeltaGPE=(mgh)/(1+h/R)`
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NARAYNA-GRAVITATION-EXERCISE -I (C.W.)
  1. A body of mass 'm' is raised from the surface fo the earth to a height...

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  2. A person brings a mass 2kg from A to B. The increase in kinetic energy...

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  3. The work done liftting a particle of mass 'm' from the centre of the e...

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  4. The figure shows two shells of masses m(1) and m(2). The shells are co...

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  5. Energy required to move a body of mass m from an orbit of radius 2R to...

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  6. the ratio of escape velocities of two planets if g value on the two pl...

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  7. The escape velocity from the surface of the earth of radius R and dens...

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  8. A body is projected vertically up from surface of the earth with a vel...

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  9. A spaceship is launched in to a circular orbit of radius R close to su...

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  10. The escape velocity from the earth is 11 km//s. The escape velocity fr...

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  11. An object of mass m is at rest on earth's surface. Escape speed of thi...

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  12. A satellite revolves in a circular orbit with speed, V=1/(sqrt(3))V(e)...

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  13. A space station is set up in space at a distance equal to the earth's ...

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  14. The orbital speed for an earth satellite near the surface of the earth...

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  15. Two satellite are revolving round the earth at different heights. The...

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  16. A satellite of mass m revolves around the earth of radius R at a hight...

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  17. Two satellites M and N go around the earth in circular orbits at heigh...

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  18. A satellite of mass m revolves revolves round the earth of mass M in a...

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  19. The moon revolves round the earth 13 times in one year. If the ratio o...

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  20. A satellite is launched into a circular orbit of radius R around the e...

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