Prescribe Force in Rigid Constraint

[lingminl]

Hi,

When prescribing a force to a rigid body through rigid constraint, the force is expressed in the global coordinate system or in the rigid body's local coordinate system?

In another word, if I prescribe a 10N +Y force to a rigid body that may rotate along X axis, will this 10N force always in global +Y direction?

And 2nd question is, where is this force on rigid body applied to? the "rc" coordinates? If the rigid body moved, will the applying point move also, or will it always on the coordinate of "rc"?

Thanks,

[maas]

The force is always in the global coordinate system, so it will always point in the same direction.

The force is applied to the center of mass of the rigid body. That point will move when the rigid body moves.

Cheers,

Steve.

[lingminl]

Thanks Steve, that explains a lot.