Hello(adsbygoogle = window.adsbygoogle || []).push({});

I study animation, and I wanted to make a script where I can automate pendulums in my scene with some kind of realistic physics, rather than animate them manually.

So 'right' I think, 'I need to go study some physics and maths' - but it wasnt as easy as I hoped, Ive hit a wall, and it is the nonlinear integration of the second order D.E:

y" = -(g/L)sin(y)

So from my limited understanding, this equation is non-linear due to the absence of y', and because y is a function of sin.

Its seems the only hints Ive been able to get is that integrating it is not a particually easy thing to do, with references only giving me parameters to enter into mathematics software for computation.The problem is, I essentially need to write my own software(script), and without understanding what is going on, I cant.

If I could get some better idea of what is involved, then I can decide if its going to be worth my while spending more time trying to do this now, or if I need a diploma in advanced mathematics first :)

thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Need some help with nonlinear integration

**Physics Forums | Science Articles, Homework Help, Discussion**