Various types of attachments can be used with the shop vac

Chapter 5, Problem 5.21

(choose chapter or problem)

Various types of attachments can be used with the shop vac shown in Video V5.2. Two such attachments are shown in Fig. P5.21—a nozzle and a brush. The flowrate is \(1~ \mathrm{ft^3/s}\). (a) Determine the average velocity through the nozzle entrance, \(V_n\). (b)Assume the air enters the brush attachment in a radial direction all around the brush with a velocity profile that varies linearly from 0 to \(V_b\) along the length of the bristles as shown in the figure. Determine the value of \(V_b\).

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