大家好,歡迎來到Yogi霸霸解題給你看,今天我要講解的是AP Physics C裡,Rotation的作業。

The wheel in the figure below has eight equally spaced spokes and a radius of 30 cm. It is mounted on a fixed axle and is spinning at 2.4 rev/s. You want to shoot a 15 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?

(c)If so, where is the best location?