A) zero
B) \[\frac{\pi }{30\sqrt{2}}\text{ cm/s}\]
C) \[\frac{\pi }{30}\text{ cm/s}\]
D) \[\frac{\pi \sqrt{2}}{30}\text{ cm/s}\]
Correct Answer: D
Solution :
[d] \[\Delta \text{v}=\sqrt{2}v=\sqrt{2}\omega \,\text{r}=\sqrt{2}\left( \frac{2\pi }{60} \right)\times 1=\frac{\pi \sqrt{2}}{30}\,cm\text{/}s\]
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