A pipe line which is 6 m in diameter contains a gate valve. The pressure at the centre of the pipe is 25 N/cm2. If the pipe is filled with specific gravity 0.8, find the force exerted by the oil upon the gate.
(a) 7.06 MN
(b) 14.12 MN
(c) 3.53 MN
(d) 28.24 MN
The question was posed to me during an interview for a job.
The origin of the question is Total Pressure & Vertical Plane Surface Submerged in a Liquid topic in division Hydrostatic Forces on Surfaces of Fluid Mechanics