The resultant applied force of comp1 on comp2. A 3D vector.
(Nth-Domain Applied-Force 3 3d-Vector-Quantity) (Nth-Domain Applied-Force 2 Mechanical-Component) (Nth-Domain Applied-Force 1 Mechanical-Component)
(=> (= (Applied-Force ?Comp1 ?Comp2) ?F) (Quantity.Dimension ?F Force-Dimension))