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Homework Help: Parachute but with no given mass.

  1. Oct 8, 2007 #1
    1. The problem statement, all variables and given/known data
    Parachutists open the canopy of their parachutes in order to reduce the speed at which
    they land on Earth. How large should a parachute canopy be in order to reduce the
    landing speed to 10 miles per hour? Consider the parachute to be circular, to be
    descending vertically without gliding, and to have a coefficient of aerodynamic drag of

    2. Relevant equations
    problem is all equations i find include mass as a variable.

    3. The attempt at a solution
  2. jcsd
  3. Oct 8, 2007 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    Perhaps the mass will cancel out somewhere in the solution...?
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