Exam 11: Flows in Piping Systems

$\text {Water, issuing from an 8-mm-diameter nozzle, impacts the blade}$ \text {with a velocity V _ { 1 } = 50 \mathrm {~m} / \mathrm { s }, as shown. The \(x\)-component of the }$\text {force of the water on the blade is nearest}$ $x$ -component of the }\text {force of the water on the blade is nearest} " class="answers-bank-image d-inline" loading="lazy" >

$\text {Water flows over a 2-m-wide flat plate with}$$\text { the same velocities as in Problem 4 in the}$$\text { mini-exam for Section 4.4 where we found}$ \text {\bar { v } = 0.0667 \mathrm {~m} / \mathrm { s }. The frictional force \(F\) }$\text {acting on the horizontal surface is nearest:}$ $F$ }\text {acting on the horizontal surface is nearest:} " class="answers-bank-image d-inline" loading="lazy" >

The blade in Problem 3 is moving in the x-direction at 20 m/s. It is one of numerous blades on a rotor being energized by six jets each emitting water at 50 m/s. The entering blade angle is The 45 $45 ^ { \circ }$ angle shown. If the six jets are oriented properly, the maximum power output of the Rotor would be nearest: