The elements of the mechanics of materials and of power transmission (1911)
King, William Richard, 1852- · New York, J. Wiley & sons; [etc., etc.] · leaf 35
or a rotation about an axiswithout any tendency to shift its center of gravity, the body issaid to be acted on by a couple. A couple consists of two parallelforces of equal magnitude acting in opposite directions but notin the same line, the arm of the couple being the perpendiculardistance between… … w R + W Fig. 21. Thus, the beam mn of Fig. 21 is acted on by the equal andopposite couples, R and R, and W and W, the tendency beingto turn the beam in opposite directions about the point r; thatis, to bend it at r. In Fig. 22, the couples whose moments areRi X mr and R2 X nr have the same effect…
Mechanics, Applied · Power transmission
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