Question: 1 1 - 3 . 1 0 In Prob. 1 1 - 3 . 9 , block B starts to rise when the frome rotates

11-3.10
In Prob. 11-3.9, block B starts to rise when the frome rotates at 38.2rpm. Find the coefficicht of friction
under block A if the coefficient of friction at block B is 0.20.
Anvwer: fA=0.561
1 1 - 3 . 1 0 In Prob. 1 1 - 3 . 9 , block B

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