A hand book of general instruction for mechanics, containing useful rules and memoranda for practical men (1907)
Smith, Franklin Elijah, 1872- · New York, D. Van Nostrand company · leaf 274
nches from the fulcrum? (Fig. 71.) 6 X 50 300 36 36 = 84- Ans. Then a power pressure, or weight of 8J pounds placedat a distance of 36 inches from the fulcrum will balancea weight of 50 pounds placed 6 inches from the ful-crum. THE SIMPLE MACHINES 261 61 zv 36- 50 ~V \0 Fig. 71 Example. Let A, B,… … Fro. 72 262 A HAND BOOK FOR MECHANICS 40 X 16 640 = 160 lb. Am. Example. Let A, B, C, be a bent lever with a forceequal to 80 pounds applied at A on the short arm, thelength A, B, is 12 inches, and the length B, C, is 96inches. What weight at C can be lifted? (Fig. 73.) 80 X 12 96096 = 9b 10 lb.…
Mechanics · Arithmetic · Measurement
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