Recent content by DannyS

I am trying to input the equation of motion for a pendulum: θ1'' = −g (2 m1 + m2) sin θ1 − m2 g sin(θ1 − 2 θ2) − 2 sin(θ1 − θ2) m2 (θ2'2 L2 + θ1'2 L1 cos(θ1 − θ2)) L1 (2 m1 + m2 − m2 cos(2 θ1 − 2 θ2)) with θ2 and θ2'2 being the only unknowns but I am not getting the results that are...

Thank you for your help! I am working on cleaning it up.

I am trying to input these 2 equations of motion for a double acting pendulum into mathematica in hopes of solving for θ2, θ2', and θ2''. I am fairly new to the program and I am having trouble inputting the equations. I am swinging a prosthetic leg like a pendulum and I am trying to predict what...