Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 30
which intersect Pi, P2, Qi,and Qi, according to (i). Therefore they are equivalent to each other. § 3. A Force and a Couple. — The resultant of a coplaner force and coupleis a single force; the resultant is equal to and has the same direction as the force,and its moment about any point on the given…
Mechanics
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