Posted: January 8th, 2016

Find the moment of the force about the origin.

Suppose a force F acts through the point P with position vector r.  The moment about the origin, M of the force is a measure of the turning effect of the force and is given by M = ?×?.  A force of 4N acts in the direction  i + j + k , and through the point with coordinates ( 7, 1, 3).  Find the moment of the force about the origin.

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