(a) A yo-yo is swung in a vertical circle in such a way that its total energy...
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(a) A yo-yo is swung in a vertical circle in such a way that its total energy KE + PE is constant. At what point in the circle is its speed a maximum? A minimum? Why?
(b) If the yo-yo has a speed of 3 m/s at the top of the circle, whose radius is 80 cm, what is its speed at the bottom?
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