- #1
Bob Loblaw
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Homework Statement
A student bumps into a tray of jello. The lime jello is jiggling side to side faster than the orange jello. Both jellos have the same spatial dimensions. Which statement is true?
Answer: Lime jello has a higher shear modulus than orange jello
Homework Equations
Shear modulus: (F/A)/(X displacement/initial length)
Hook's Law: angular frequency=sqrt(k/M)
The Attempt at a Solution
The only difference between the jello is the lime jello jiggles more and this has a higher x displacement. this increases the denominator and makes the shear modulus seem *smaller* to me. Then upon looking at Hook's law, I see that higher angular frequency must be due to a higher K since M in both jellos are equal. Stiffer spring means higher shear modulus, right? How can I reconcile these seemingly contradictory statements!