2009

Static Friction Determines how difficult it is for an object to start moving
along a surface (the higher this value, the more difficult the movement). If
something weighs 10 pounds and sits on Teflon (a static friction of near zero),
it takes almost no force to make it move sideways. On the other hand, if it
sits on sandpaper, then the static friction might be very high, around .5 to .8.
Sliding Friction Determines how difficult it is for an object to keep moving
over a surface (the higher this value, the more difficult for the object to keep
moving). Once two objects begin to slide over one another, static friction
disappears and sliding friction takes over. Generally, sliding friction is lower
than static friction due to surface tension effects. For example, once steel starts
sliding over brass (a value of static friction that might run from .05 to .2), the
sliding friction drops to a significantly lower value: .01 to .1.
Edit Object Dialog
Utilities panel > Utilities rollout > More button > Dynamics > Dynamics rollout
> Edit Object button > Edit Object dialog
The Edit Object dialog is the main interface for setting dynamic properties for
any object in the simulation. You assign dynamics properties one object at a
time. Select an object in the list under Object, and then set that object's
parameters. For example, you can cause the object to be affected by gravity
or wind, and specify collisions with other objects.
Dynamics Utility | 3867