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I`ve attached the question as an image...It is somewhat typical...Please give me a clear solution

I`ve attached the question as an image...It is somewhat typical...Please give me a clear solution

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Grade:11

1 Answers

Mallikarjun Maram
50 Points
8 years ago
When the coin is about to slip, centripetal force is just equal to the limiting friction.  m\omega ^{2}r = \mu mg.  Substitute the values and solve for \omega, you will get the answer 84.54 rpm after proper unit conversion.

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