Question

Determine the resultant hydrostatic force, Fr, on the submerged plate, and its location, ZR, in terms of depth from the surface. The 8m wide tank contains liquid with density p = 1200 kg/m3. 3.5m A 2m B

Answer 1

Resultant hydrostatic force on the submerged plate FR = 2g AT 1 where A- area of the plate A = 8 x 2 = 16 m2 h = Distance of center of gravity of plate from the free surface h 3.5+ 2 - 4.5 m P = density of liquid p = 1200 Kgims FR: 1200x9-81 x 16 x 4.5 847584 N 847.6 KN Ans. - let fr will be acting at distance of h* from the free surface Then h* is given by formula * b = IG th Ah where I G= Moment of inertia about center of gracity of the area of surface. IG= bd3 8x23 - 5. 33 m 4 12 12

+ 4.5 5:33 16x4:5 4.574 m Ans.