Question about cornstarch/ non Newtonain fluid

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SUMMARY

This discussion centers on measuring the compressive ability of substances, specifically focusing on the force constant (k) from Hooke's Law, represented as F = -kx. Participants explore the correlation between trampoline compression and bed compression, and inquire about the force constant of cooking cornstarch, a non-Newtonian fluid. The conversation suggests that measuring k involves experimental methods, such as applying weight to observe stretching or deformation, and raises the possibility of using Young's modulus for further analysis.

PREREQUISITES
  • Understanding of Hooke's Law and its formula (F = -kx)
  • Familiarity with the concept of force constant (k) and spring constant
  • Basic knowledge of Young's modulus and its application in material science
  • Experience with experimental methods for measuring material properties
NEXT STEPS
  • Research methods for measuring the force constant (k) of various materials
  • Explore Young's modulus and its relevance to non-Newtonian fluids
  • Investigate the properties of non-Newtonian fluids, specifically cornstarch mixtures
  • Learn about experimental setups for testing compressive strength and deformation
USEFUL FOR

Material scientists, physics students, engineers, and anyone interested in the mechanical properties of materials, particularly non-Newtonian fluids like cornstarch.

superaznnerd
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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, I am looking for the force constant (k) of cooking corn starch, a non Newtonain fluid? Does anyone know it?
 
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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
 
Are you thinking of Young's modulus?
 

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