2009

Interface
Object Displays the name of the object for which you're setting the dynamic
properties. All settings in the Edit Object dialog affect the object listed here.
To change the object you're affecting, open the list, and choose from a list of
all objects assigned to the simulation.
Dynamic Controls group
Use Initial State When turned on, the simulation solves for the motion,
energy, and momentum of the object at the simulation's starting frame
(specified in the Start Time spinner in the Time and Simulation rollout >
Timing group.) If Use Initial State is turned off, the object is assumed to be
sitting motionless at the starting frame. The Dynamics utility overwrites keys.
Either the object's keys are clocked with the simulation, or it's not moving (or
both). If you don't solve for the initial state, the object's keys are interpolated
at the instant the simulation starts and all subsequent motion comes from
the interaction of the simulation itself.
3868 | Chapter 15 Animation