A smooth wooden sphere (SG 0 65) is connected by a thin rigid rod to a hinge in a wind tunnel, as in Fig P7 112 Air at 20 deg C and 1 atm flows and levitates the sphere (a) Plot the angle theta versus sphere diameter d in the range 1 cm le d le 15 cm (b) Comment on the feasibility of this configuration Neglect rod drag and weight Rod, L 50 cm U 12 m s , Hinge

Question: A smooth wooden sphere (SG = 0.65) is connected by a thin rigid rod to a hinge in a wind tunnel, as in Fig. P7.112.

A smooth wooden sphere (SG = 0.65) is connected by a thin rigid rod to a hinge in a wind tunnel, as in Fig. P7.112. Air at 20°C and 1 atm flows and levitates the sphere.
(a) Plot the angle θ versus sphere diameter d in the range 1 cm ≤ d ≤ 15 cm.
(b) Comment on the feasibility of this configuration. Neglect rod drag and weight.

A smooth wooden sphere (SG = 0.65)

Rod, L-50 cm U- 12 m/s , Hinge

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