Twisden, John Francis · London, Longmans, Green, and Co. · leaf 119
by p is 2Trap, while thework expended on q is q ^; therefore, if all the frictions were neglected, we should have 2 7rap = Qi^. (1) In reality, however, the frictions greatly modify the result. A sufficientlyclose approximation to the relation between p and q when friction is takeninto acco\int,… … 104 THEORETICAL MECHAXICS. pressure in both cases being nearly or exactly equal to q. Let r denotethe radius of the screw and /w the coefficient of friction between the screwand companion ; then the work expended on the first friction in one turn ofthe screw will equal /x q x 2 tt r. Let p denote…
Mechanics, Analytic
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