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Question about cornstarch/ non newtonain fluid

  1. Mar 30, 2010 #1
    How do you measure the ability of a substance to take compression? Do you use the force constant (k) of Hooke's law? F = -kx?

    For example, what propoerty correlates with a trampoline's ability to take compression better than a bed?

    Also, where can I find the force constant (k) of everyday items? More specificlly, Im looking for the force constant (k) of cooking corn starch, a non newtonain fluid? Does anyone know it?
  2. jcsd
  3. Mar 31, 2010 #2
    k is a spring constant , k is measured by doing an experiment , putting a weight on and seeing how much it stretches but maybe you can see how mush cornstarch gives , by psi/distance and do some testing
  4. Mar 31, 2010 #3

    Andy Resnick

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    Are you thinking of Young's modulus?
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