Re: List Reborn

From: <rakesh_chandel@LNTENC.COM>
Date: Wed Oct 19 2005 - 23:48:00 EDT

i have some different view from you(if i am wrong plz correct me)

take a example of earth consider only revolution in half cycle
the change of momentum is 2mv
but still the kinetic energy is same .5mv^2 Rakesh Chandel
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              Christopher
              Wright
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                                        Re: [PipingDesign] List Reborn

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On Oct 18, 2005, at 11:41 PM, Steve McKenzie wrote:

> A momentum change does not necessarily result in a change of energy
> level.

I think it does. Any change in momentum represents a change in velocity or a change in mass, Since kinetic energy varies with both mass and velocity, any change in either represents a change in kinetic energy.

KE = mv^2/2 ∆(KE) = 0.5v^2∆m + mv∆v

Usually mass stays constant so ∆KE = mv∆v In that case the change in momentum = m(v + ∆v) - mv = m∆v.
Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=YVnC12VrE-uADY5SGqECxNsmthP_pKaxS1J9TyNOTBJ4hB_hRc1S8HEAs7EwcgFkFxIwQnx9OtxilnFa5zs">chrisw@skypoint.com</a> | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania

1864)
<a href="http://www.skypoint.com/~chrisw/">http://www.skypoint.com/~chrisw/</a>

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