Posted by Anonymous on Sunday, November 8, 2009 at 6:34pm.
mgh=1/2 k x^2
72(9.8)*38=1/2 k (38-13)^2
solve for k
Maximum acceleration? as she begins to fall, it is -9.8m/s^2
Now at the bottom, she is accelerating upward.
Forcebottom= -mg+k(38-13)
and Force= ma
solve for a.
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