Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 116
nge of effect, be re- Resolution of aplaced by a single one, may a single force be replaced by Jj^?°two others, acting in given directions. Let a given force,applied to the point 0, berepresented in direction and in-tensity by the line 0 r: its com-ponents, in any two assumeddirections, as 0 A and… … Or = R; the angle trigonometrical 0. Then, in tlangle 0r n, because Om — rn — P, we shall have AOB=y=rnB= 180° - rn 0. Then, in the tri-re resultant to itstwo components; E2= P2 + Q2 + 2PQ cos 9, or R VP2 + Q2 + 2PQ COS (p . (31); value of resultant; and because the angle 0rn is equal to the angle…
Mechanics · Acoustics · Optics
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