Question: As shown in Fig. P9.77, a vertical wind tunnel can be used for skydiving practice. Estimate the vertical wind speed needed if a 160-lb person

As shown in Fig. P9.77, a vertical wind tunnel can be used for skydiving practice. Estimate the vertical wind speed needed if a 160-lb person is to be able to "float" motionless when the person

(a) curls up as in a crouching position

(b) lies flat. See Fig. 9.30 for appropriate drag coefficient data.

Figure P9.77

Fig. 9.30

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