Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 200
Fig. 133 283. In hemp or cotton rope-drives the greatest workingstress is 140 pounds per square inch and the tension on thetight side of the rope is usually considered to be four timesthe tension on the slack side. (a) What is the effective force, useful in transmittingenergy, in a rope having a… … Fig. 134 (b) To what value of /t do the above tensions correspondif we assume that the common formula for belt friction appliesin this case, that the angle of contact between rope and pulleyis 180°, and that the rope is about to slip? 284. Find graphically the useful resistance Q, correspond- i84…
Mechanics
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