Question

(10) A 23.2 lbm flat plate with an area of 0.64 ft? is placed flat on the floor. What is the pressure, in psi, that the plate exerts on the floor? (11) A certain fluid has a density of 13.2 g/cm? What is its density in lb/ft?? (12) After conducting a series of experiments, you determine that the flow rate, Q, in ft/s through a channel of length L and height his given by the equation: Q=5.35 L LS What are the units of 5.35?

Answer 1

10) given: Mass - 23.2 lbs (Conversions used Pressure in psi is defined as opound 3 Ilom - 0.4536kg. Jora per square inch. I ft = 30.48 um = 12 inch pound force = Mass (pound or lbm) x aceleration due to gravity. 23.2 lbm x 9.8 ms2 = 227.36 lbm ms2 pressure (psi) = 227.36 (lbm mo lapsi Area = 0.64 ft² 92. 18 in2 = 0.64% 12x12 in 2 = 92.16 in2 2.47 psi

11) I lbm = 453.69 so lg - I lom and 453.6 Ift = 30.48cm 1cm = I ft 30.48 1cm² = L sft (30.48 Given p = 13.29 453.6 ft3 - 13.2 x 1 lbre (30.48) - 824 lbm/f43 12) Let unit of 5.35=x , unit of a = ft/s or fts ha Putting only units in expression, a= 535th's so str = x.ff.fts x = 3 i = ftts 5