Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 199
n Fig. 132. 280. A rope makes 2.5 turnsabout the wooden drum of ahoisting engine. If the loadto be lifted is equivalent to3000 pounds, at the drum,what force must be appUed tothe rope as it leaves the drumin order to create the necessaryfriction? The coefficient offriction between wood and rope is… … PROBLEMS FOR REVIEW 183 (b) the reactions at the abutments M and iV, due to this load. 282. Sketch enough of the stress diagram for the frameillustrated in Fig. 133 to determine the stresses in the membersmarked D and E, State whether the members D and E arein tension or compression. r
Mechanics
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