- #1
freshcoast
- 185
- 1
Homework Statement
Homework Equations
The Attempt at a Solution
Well since spring is in SHM, only conservative forces are at play here. So using conservation of energy, the kinetic energy would be the change in potential energy. Which I have set up as
KE = 1/2k(A^2)2 - 1/2k(A/4)2
after some algebra, combining like terms with common denominators I am left with,
KE = (15/32)kA2
now when I take the fraction of the two, PE/KE of
(15/32)kA2 / 1/2mv2
I get (15/16)kA2/mvf2
So I'm thinking my answer would be 15/16
I don't know whether to just ignore the variables since there was no value in them or I find a way to relate them since I was given a frequency?