Refer to the cart of Prob. 6.32. If the cart speed is constant at 5 ft/s, and if the initial jet speed is 60 ft /s, and jet diameter = 0.15 ft, what is the rolling resistance of the cart? (ρ = 62.4 lbm/ft³.) See §6.5 for useful knowledge about moving CV’s.

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50 m/s 3 m/s Elevation view 50 m/s 45° 3 m/s to Vane 15 cm diameter 90° Plan view