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 279
holds 1^ tons. Arts. By the principle of the lever, the shorter arm mustbear the greater weight and the longer arm the smallerweight. 266 A HAND BOOK FOR MECHANICS This fact was clearly demonstrated by Fig. 69. The following figure will clearly explain the solving ofall such problems as the above.… … jr*-s <y> Fig. 80 5X4 20 iii a = — = 11 tons. Arts. 16 16 4 That is to say, a weight of 1^ tons arranged over a pulleyC, as shown in figure, would exactly counterbalance aweight of 4 tons placed as in the above. Now place a support D under the lever at B, take awayweight E letting lever rest…
Mechanics · Arithmetic · Measurement
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