Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 62
crane supports aload of 1.5 tonsand the jib isswung out atright angles tothe rails to-ward the left : (Fig. 70). There arethree support-ing forces orreactions, oneon each wheel.Since the lowerrail is level, the crane does not tend to roll, and there is no reaction of the rails in theirdirection.… … 1^
Mechanics
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