International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 351
d 18 inches,(</) how great a force must be applied at the free end P to raise 1,000pounds at /T? (<^) What is the ratio between/» and \Vi Solution.— /^ x 24 x 18 x 30 = 1,000 x 6 x 6 x 18, _ 648,000 „ . . or P = ,. „„,. = 50 pounds. Ans.12,960 50:1,000 = 1 : 20. or y: ;F= 1:20. Ana.… … Fig. 142. before, PX distance through which it moves = Wx dis-tance through which it moves; and, since these distancesare proportional to the radii of the power cylinder andweight cylinder, Fx Fc= ]VX Fb. It is not necessary that an entire wheel be used; an arm,projection, radius, or anything…
Railroad engineering
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