An instrument popular in the beverage industry is the target flowmeter in Fig. P6.160. A small flat disk is mounted in the center of the pipe, supported by a strong but thin rod.
(a) Explain how the flowmeter works.
(b) If the bending moment M of the rod is measured at the wall, derive a formula for the estimated velocity of the flow.
(c) List a few advantages and disadvantages of such an instrument.
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