The applet below illustrates a vector triple product. In statics the vector triple product can be used to calculate the moment from a force at a point C about an axis AB.[br][math]M_{AB}=\lambda_{AB}\cdot\left(r_{AC}\times F_C\right)[/math] where:[br][math]\lambda_{AB}[/math] is a unit vector directed from point A to Point B[br][math]F_C[/math] is the force vector at point C[br][math]r_{AC}[/math] is the position of the force vector at C relative to any point on the line AB[br][br]The scalar vector triple product is also the volume of a parallel-piped formed from the three vectors. Shown below is a parallel-piped formed from three vectors P, Q and S. Also shown is another parallel-piped formed with P replaced by a vector shifted by a factor times the Q and a factor times the S vectors. The vector, Pnew, is in a plane parallel to the plane formed by the Q and S vectors.[br]Changing the view and shift amounts you should see the new shape is a skewed version of the original shape and should have the same volume. This is equivalent to shifting the top of a parallelogram where the height remains constant.