An elementary treatise on mechanics, embracing the theory of statics and dynamics, and its applications to solids and fluids (1849)
Smith, Augustus William, 1802-1866 · New York, Harper · leaf 109
t;z=3 feet and b=5 feet,and inclined to each other at an angle 0=150°. To the arm THE LEVER. C3 a a power P=7 lbs. is applied, and to the arm b a weight W= 6 lbs. Required the inclination of each arm to the horizonwhen there is an equilibrium. Let a be the inclination ofthe arm a, and (3 the… … ■wQ Tan. a- W.b. sin. S21-30 cos. 30° 30. sin. 150°21-30X^3 4,98~15~ 30. sin. 30 30 X^ Log. Tan. «=9.5211381n, fl=-180.22,and ^=18O°-(a+0) = 18O°-l-18o.22,-15Oo=48o.22/. Hence the arm AC is inclined at an angle of 18°.22 abovethe horizon, and BC at an angle of 48°.22 below the horizon. Ex. 6. The…
Mechanics, Analytic
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