The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 209
fulcrum is placed.What weight must be suspended from the other extremity ofthe lever to keep it in equilibrium (balanced)? If 10 pounds is suspended 5 feet from the fulcrum, thenat one foot from the fulcrum on the opposite end it will take5 times as much to balance it, or 50 pounds, the answer. A… … In a lever, as shown in figure 1, a weight of 100 poundsis suspended at A. What will be the required weight at B tohold this weight in equilibrium? Both arms being of thesame length from the fulcrum C, but while A is horizontalB is inclined at an angle of 45°, as shown. The cosine of 45o=.707, then…
Machinery
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