Question

Air is pumped at a rate of 10L/min from one pressurized tank to another through a reducing bend as shown in the figure below. The bend has a diameter of 5cm on the side of Tank 1 and 1cm on the side of Tank 2. If the angle of the bend, 0, is (a) 30 or (b) 0 what is the force exerted by the pipe walls on the fluid? If the whole system is put on a cart and moved with a velocity of 5m/s to the right how does this change your answer to (a) and (b)? Tank 1 Pressure 10kPa Tank 2 Pressure 30kPa V 10L/min

Answer 1

Giiven min 60 S Q= 001 m3 6o S (ej PiP V2 1 on bend pipes P1 = 10 kPa Pa : 30 кра.- on bend Pipe'o divection According to NewTons 3rd Lato Lfor evouy aton ppton] the end pipca wit e u in opposib divacttory x 10

2 F 2-123 m 60x 85xIo 5 Fi. CPiP Cos From Mpatse, momamtum em Net tore in Х diection gato change ot momantuno in χ d suction Q103 CoS 45 0.085 62 039 o 236 3 o 69

bend [a 6-2 355-0235 60 0-0-0 ure