The wheel in Figure has eight equally spaced spokes and a radius of \(30 cm\). It is mounted on a fixed axle and is spinning at \(2.5 rev/sec\) 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. What minimum speed(in m/sec) must the arrow have?
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