A 50-cm 3 30-cm 3 20-cm block weighing 150 N isto be moved at a constant velocity of
Chapter 2, Problem 2-79(choose chapter or problem)
A 50-cm 3 30-cm 3 20-cm block weighing 150 N isto be moved at a constant velocity of 0.80 m/s on an inclinedsurface with a friction coefficient of 0.27. (a) Determinethe force F that needs to be applied in the horizontal direction.(b) If a 0.40-mm-thick oil film with a dynamic viscosityof 0.012 Pa?s is applied between the block and inclinedsurface, determine the percent reduction in the requiredforce.150 NF30 cm50 cm20V= 0.80 m/s
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