Greenhill, G. (George), Sir, 1847-1927 · London and New York, Macmillan and Co. · leaf 70
area (fig. 25). For consider the equilibrium of the liquid super-incumbent on BG, which is bounded by the cylindricalsurface BCcb, described by vertical lines through theperimeter of BG, cutting the horizontal surface in he. ON ANY PLANE SURFACE. 59 Resolving vertically, the thrust on the different… … Fig. 25. Now, if A denotes the area of BG in square feet, andQ the inclination of the plane of BG to the vertical, thenthe area of he, called the projection of BG on a horizontalplane, is A sin 0 ft^; and by well-known geometricaltheorems, if E is the C.G. of BG, then e, the projectionof E, is the…
Hydrostatics
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