The pipe shown has a 180° vertical bend in it. The diameter D is 1.25 ft , and the pressure at the center of the upper pipe is 15 p_sig. If the flow in the bend is 40 cfs, what external force will be required to hold the bend in place against the action of the water? Th e bend weighs 200 lbf, and the volume of the bend is 2 ft ³. Assume the Bernoulli equation applies. (ρ = 62.4 lbm/ft ³.)