Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 145
yingdistances from the axis of rota-tion. The sum of the frictionalforces acting at the elements ofcontact has thus no meaning.The frictional resistance musthere be computed as a resistingmoment. In order to estabhsh formulasfor the frictional resisting mo-ment various assumptions mustbe made. Only… … Fig. 94 FRICTION — APPLICATIONS TO MACHINES 129 The assumptions made in establishing the followingformulas are 1. That the coefficient of friction is independent ofthe pressure and of the velocity at the point of contact:thus, fi is constant for any given pivot. 2. That the pressure over the…
Mechanics
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