Solved Problem for Fluid Mechanics | EAS 361, Exams of Fluid Mechanics

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2.8% 2.88 A plare of negligible weight closes I-fi diameter hole in a tank comtaining air and water as shown in Fig, P2.88, 4 block of conccete (specific weight = 150 19/4), having a vol- wane of 1.5 1, is suspended from the plate and is compieiely immersed in the water. As the sir pressure is increased the dif- ! ferential reading, Av, on the inclined-tube mercury manometer i increases. Determine Ak just before the plate stars to lift off the hole, The weight of the air has a negligible effect on she manometer readin, for egailr brim, | Verbal Jo That d= pat k pw weight of Cacvede PY aw pressure Aw area of plete : fan b 7h vo thet = & pe ter 2 The bmenometer egection “3 pe 0, 44 stn 0° So Mat 3 = A Ah= “ay TH30° 67 &, 7 ee #7 4) Sie 30? 2-3 Dizmeter = 1 tt Plate Ais pressure space & FIGURE P2392 1 = oe air Deo EPP ETI fA gz —> an = wa ? (les #,) lis fe) = PEM AP lark Vise)