1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Rocket Science

  1. Nov 7, 2004 #1
    [SOLVED] Rocket Science

    "Calculate the speed acquired by a rocket whose mass varies as it burns up fuel."

    Is there any way I could make up a semi-realistic problem relating to the above quote and solve it with logarithms?
     
  2. jcsd
  3. Nov 7, 2004 #2
    [tex]F=ma[/tex]
    [tex]F=m\frac {dv}{dt}[/tex]
    [tex]\frac {F}{m} = \frac {dv}{dt}[/tex]
    [tex]\int \frac {F}{m}dt = \int \frac {dv}{dt}[/tex]
    [tex]v=\int \frac {F(t)}{m(t)}dt[/tex]
    Not sure if that answers your question
     
  4. Nov 7, 2004 #3
    I'm only in grade 11 and haven't done any calculus. Is there any way to make any sort of problem for this that only includes Logarithms?
     
  5. Nov 7, 2004 #4
    Isn't force the derivative of momentum such that you would have to include the [itex]v\frac{dm}{dt}[/itex] term as well?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...