The wheel in fig 10-30 has eight equally spaced spokes and, Ask an Expert

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The wheel in Fig. 10-30 has eight equally spaced spokes and a radius of 30 cm. It is mounted on a fixed axie and is spinning at2.5 rev/s. You want to shoot a 20-cm-long arrow parallel to this axle and through the wheel without hitting any of the spokes. Assume that the arrow and the spokes are very thin.

(a) What minimum speed must the arrow have?

(b) Does it matter where between the axle and rim of the wheel you aim? If so, what is the best location?

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