2.0Hz
7.0Hz
8.8Hz
14.0Hz
17.6Hz
Correct answer is B
W = \(\frac{v}{r}\)
= \(\frac{0.88}{0.02}\) = 44 rad/s
2\(\pi\)F = W = 44
F = \(\frac{44}{2 \times 3.142}\)
= 7Hz
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