Discussion
A cylinder of \( 0.55 \) m diameter runs at \( 600 \) rev/min. Its peripheral speed is
Answer: C
The circumference is \( \pi \times 0.55 = 1.728 \) m and the speed is \( 1.728 \times 600/60 = 17.3 \) m/s. Peripheral speed rather than rotational speed is the meaningful setting, since it is what the crop actually experiences.
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