Made forces more explicit in chaos_pendulum.py.
Made forces more explicit in chaos_pendulum.py.

Shekharrajak/pydy,jcrist/pydy,jcrist/pydy,oliverlee/pydy,Shekharrajak/pydy,oliverlee/pydy,skidzo/pydy,skidzo/pydy,Shekharrajak/pydy,skidzo/pydy,jcrist/pydy,jcrist/pydy,Shekharrajak/pydy,jcrist/pydy,jcrist/pydy,skidzo/pydy,jcrist/pydy,oliverlee/pydy