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 282
delivered force by Q, 186.] MEASUREMENT OF POWER. 25 the radius KM by a, KE by r, LF by rx, NL by b% the forcedelivered at E by Rt that at F by Rt.We shall have Rr = Pa, also Rf^Qb. But R(ED) = R%{FD)\ and since is/> = F27, R = Rt. The resultant force Z == R -f- tf, = 2R..:R = iZ-, P=iZr + a; Q… … Fig. 130.—Hachettes Steelyard-dynamometer. Consideration of Friction.—The friction of the axle andgear-teeth will increase the force R and decrease the force RrLet pi be the experimental coefficient expressing this friction.Then P=i(i+»)Zr + a;Q^Hi-^Zr^t;Par, — Qbr M = Par, + Qbr 252 EXPERIMENTAL…
Building materials · Machinery
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