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Mechanics

New kid on the Block

 Joined: 21 Dec 2008 Post: 1
21 Dec 2008 15:49:51 IST
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what will be the formula for escape vvelocity?
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what will be the formula for escape vvelocity?

Blazing goIITian

Joined: 24 Sep 2008
Posts: 1694
21 Dec 2008 15:54:58 IST
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its V=(2gR)^1/2 how?????? ask again ....

Scorching goIITian

Joined: 22 Dec 2007
Posts: 293
21 Dec 2008 16:43:16 IST
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root2gr....

Blazing goIITian

Joined: 8 Oct 2008
Posts: 8064
9 Jan 2009 22:20:03 IST
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Hello dear

escape velocity of any planet is given by

Ve = (2GM/R)1/2 or (2GR)1/2

where M is the mass of that planet and R is the radius of that planet.ang G is gravitational constant

Cheers..........................

New kid on the Block

Joined: 18 Sep 2008
Posts: 26
9 Jan 2009 23:14:50 IST
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the gravitational potential of a body on a planet is -GMm/R

for a body to escape the planet a kinetic energy >= the magnitude of this gravitional potential has to b produced

so,  1/2mv2=GMm/R

v=(2GM/R)1/2

where M-mass of planet   R-radius of planet

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