Greenhill, G. (George), Sir, 1847-1927 · London and New York, Macmillan and Co. · leaf 86
h wouldoccupy the volume BACcah, and to counteract this up-ward thrust the mould must be fastened down, or weighteddown with corresponding weights. ON A CURVED SURFACE. 75 The downward thrust od the lower part of the mould,called the core, will be equal to the former upward thrust,plus the weight… … Fig. 31. In fig. 31, the external shape of the bell is shown as acylinder, a cone, a hemisphere or hemispheroid, and aparaboloid; if a denotes the height of the bell, and Athe head of metal above the bottom of the mould, thenthe upward thrust on the mould is in these cases equalto the weight of a…
Hydrostatics
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