- #1

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Hello, there.

I have a project I'm working on where I need to be able to calculate the kinetic energy of what basically amounts a double compound pendulum. However, the pivot point of the second pendulum is not at the center of mass (ergo the necessity of using the parallel axis theorem). Furthermore, because of the way the system is set up, the angles θ1 and θ2 are more like deviations from 'rest' positions that are not parallel with the force of gravity. I tried reading up on the equation for a double compound pendulum and the parallel axis theorem online, but nowhere, I believe, have I found an article combining the two concepts in the way I have in mind, not even counting the angle condition I was wanting to set up. Would anyone be able to give me some pointers? I'm not afraid to do a little reading, if need be.

(Note: Please know that I have a good familiarity with algebra. Calculus, not so much but I know just enough of that to maybe get an idea of what's going on.)