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 271
Fig. 67.) 258 A HAND BOOK FOR MECHANICS 8X5 40 2J lb. pressure. 16 16 That is, the pressure exerted by a weight of 2\ pounds16 inches from the fulcrum, would exactly counterbalancea weight of 5 pounds 8 inches from the fulcrum. tp -—tf*-ifc 1 -/</.- ^ IS6 Hill m- >i Fig. 67 Example. How much… … Fig. 68 Here the leverages are 18 and 42200 X 18 3600 42 42 = 85f lb. THE SIMPLE MACHINES 259 That is, a pressure power, or force, of 85f pounds wouldwith the above lever, counterbalance - a weight of 200pounds. Example. How much power, or force, will be exertedto raise a block of stone which…
Mechanics · Arithmetic · Measurement
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