Problem # 1 The thrust developed to propel the jet ski shown is a result of water pumped through the vehicle and exiting as a high-speed water jet. For the conditions shown in the figure, and 400- lb thrust. Determine (a) inlet velocity [f/s] (b) outlet velocity [ft/s] (c) Volume flow rate [ft'/s] (d) mass flow rate [ lbm /hr ]. Assume the inlet and outlet jets of water are free jet Vin = Vout = 4 in.-diameter outlet jet Q = SEA CHAFT Mass flow rate 30-in. inlet area

Compute the coordinates of the centroid (z, 9) of the area shown. Also compute the area moment of intertia about the z' and y' axes with origin at the centroid. 2013 Michael Swanbom BY NC SA a W. k d Values for dimensions on the figure are given in the following table. Note the figure may not be to scale. Variable Value 6 mm 28 mm 7 mm 13 mm h 33 mm 5 mm w The z coordinate of the centroid is a = mm. The y coordinate of the centroid is j = 26.74 mm. The moment of inertia about the z' axis going through the centroid is I, mm*. The moment of inertia about the y' axis going through the centroid is Iy mmt.

Compute the coordinates of the centroid (i, g) of the area shown. y y = a /bx Values for dimensions on the figure are given in the following table. Note the figure may not be to scale. Variable Value a 4.5 in 2 in'1 (Note the -1 exponent only applies to the unit, not the number.) 7 in The a coordinate of the centroid is = in. The y coordinate of the centroid is ỹ = in.

Typed answer