Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 143
force Nmaking an angle 7 with the axis of the screw and a tan-gential (frictional) force /iN making an angle a with aplane normal to the axis of the screw (acting in thedirection AB at B, Fig. 91). As the sum of the forces along the axis of the screwmust be zero, we have Q - (XN) cosy+ IJ. (XN) sin… … P=2^Uana Fig. g2 Eliminating (^N) from (i) and (2) there restilts fi sec a{ ( cos y — fisirxa _ Qr jt tan a cos 7 +m (sec a — tan a sin a)I ( cos 7 — M sin a or, dividing numerator and denominator by cos 7, n (cos a) ^ tan a + ■ Qr cos 7 I I — fi sin acos 7 which form suggests replacing by, let us…
Mechanics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
