re only concerned figure (Fig. 2) may be supposed to keep with the pressure at a single point of the stream at right angles to the ele- the curve. But AM= pd 6 = cdt, or ments of the cylindrical surface. d6 c _> Mc3,, ,. £ £ — -=- ; .*. P = the ordinary form for Let F= cross-section of the stream,… … of contact, we have the total impulse in of the stream, dm= -, (where y — the direction of the vane's motion, at the instant considered, weight of cubic unit of the liquid) press- ? P ¥yc es normally with a force c?P= — [l-COSa] P=/3X= r 9 9 against the vane, (c denoting the rela- tive velocity v1…
Engineering
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