at constant value of m³ the tank has 49.05 psi at 40 f after the temperature becomes 25 c what happen to its pressure By a similar argument, the element can be rotated 90 about the axis and Fx = dma x can be applied to show p x = p . Since the angle of the inclined face is arbitrary, this indeed shows that the pressure at a point is the same in all directions for any fluid that has no shearing stress acting within it.Unless otherwise stated, take the density of water to be rw = 1000 kg > m 3 and its specific weight to be g w = 62.4 lb > ft 3 . Also, assume all pressures are gage pressures. 2–1. Show that Pascal's law applies within a fluid that is accelerating, provided there is no shearing stresses acting within the fluid. ( s sin u ) b a yssin u ) R = r a 12 x ( s cos u )( s sin u ) b a z