Young's Modulus ~ Please Help!
I can't solve part (b), actually I don't know how to solve it!
you need the assumtion in part a to do part b...
F=dU/dr for each atom/molecule
and young modulas is just F/A * L/delta L
I have tried to differentiate the equation in part (a), therefore,
(dU/dr)r=ro = 0
However, after solving, the equation that I got is quite different from the given one. I don't know where the (omega) comes from.
Does omega equal to 4/3 pi r^3
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