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MathGroup Archive 2000

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Rocket science!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg23855] Rocket science!
  • From: "Anders Andersen" <andmax at email.dk>
  • Date: Mon, 12 Jun 2000 01:17:48 -0400 (EDT)
  • Organization: CyberCity Internet
  • Sender: owner-wri-mathgroup at wolfram.com

Hi!

I'm trying to solve a partial differential equation for the velocity and
mass of a rocket, but i don't know how do this in Mathematica (3.0). The
equation is:

m*(dv/dt) = -m*g - u*(dm/dt)

Where d is the derivative, g = 9.8 m/s and u is som velocity less than about
5000 m/s. The start velocity is v(0) = 0 and the start mass is m(0) =
"initial mass of rocket including fuel".

I hope someone can help me - thanks!

- Anders




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