Energy loss of damped oscillator

[vel]

Better, but that's a bit inaccurate because you are taking the difference of two numbers that are rather close together. Keep more digits through the calculation.

So my final would be 2.66(-9.8)(-.0274) = .7155 ? (I've got about ten minutes left to put this in; working full days and needing sleep doesn't help me solve problems, lol)

 

[haruspex]

So my final would be 2.66(-9.8)(-.0274) = .7155 ? (I've got about ten minutes left to put this in; working full days and needing sleep doesn't help me solve problems, lol)

Yes, that's the energy lost over 10.5 swings, but it is not clear from post #1 exactly what you are being asked for. My guess is that it's fraction of energy lost per swing, assuming that fraction is a constant.