Yo!
Today, for fun, I drew a double pendulum, just to pass the time.
When I wanted to do the motion study, I realized that in 10 seconds, it seemed to lose energy, so I pushed the animation to 1 minute, and strangely, it ends up slowing down a lot, the kinetic energy graph actually indicates that it loses very quickly. I then checked the constraints in the assembly, and my friction is well unchecked, I wonder if SolidWorks Motion adds more? If by default air is taken into account? There you go!
Thank you.
(I'm coming home from work here, but tonight I'm trying with a simple pendulum, it's more practical to measure