Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 260
y a chain to an axis carrying aweighted pendulum, G, Fig. 115. The motion of the pendulum is communicated by gearingto a hand, passing over a dial graduated to show the total fric-tion on the rubbing surfaces. The formulae for use of the instrument would be as follows:Let / equal coefficient of… … 2 30 EXPERIMENTAL ENGINEERING. |_§ 161, attached ; r the radius of the journal; A the projected area ofthe journal; Pthe total pressure on the journal. Then -.—Gsina =/AP, re J from which aGR sin a sin a/= rcAP~= ~~F~> (constant-) In this instrument the total pressure P is usually constantand…
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