ch06-p089 - 89. (a) The push (to get it moving) must be at...

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89. (a) The push (to get it moving) must be at least as big as f s,max = μ s F N (Eq. 6-1, with F N = mg in this case), which equals (0.51)(165 N) = 84.2 N. (b) While in motion, constant velocity (zero acceleration) is maintained if the push is equal to the kinetic friction force
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