University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.81: The friction force on block A is N, 0.420 N) 40 . 1 )( 30 . 0 ( k = = A w μ as in Problem 5- 68. This is the magnitude of the friction force that block A exerts on block B , as well as the tension in the string. The force F must then have magnitude N.
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