ENES102_S08_Final_friction

# ENES102_S08_Final_friction - Name: _ Section: _ Problem #1...

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Name: _____________________________ Section: ____________ Problem #1 (20 points): Two uniform blocks are subjected to a force P as shown. Block A weighs 900 lb and moves along the inclined ramp. Block B weighs 600 lb and rests on top of A. In addition, block B lies between two sets of frictionless rollers against two walls, which only permits vertical motion. The coefficient of static friction is 0.3 between A and B, but is only 0.2 between A and the ramp. A P θ = 10 ° B wall wall ramp (a) Draw complete FBD’s for blocks A and B, showing all forces acting on the bodies. (b) Find the minimum force P required to move block A up the ramp.

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Name: _____________________________ Section: ____________ Problem #2 (20 points): Two uniform blocks are subjected to a force P as shown. Block A weighs 1000 lb and rests on the ground. Block B weighs 600 lb, has dimensions given in the figure, and rests on top of A. The coefficient of static friction is 0.3 between A and B, but is only 0.1 between A and the ground.
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## This note was uploaded on 05/19/2008 for the course ENES 102 taught by Professor Biegel during the Spring '07 term at Maryland.

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ENES102_S08_Final_friction - Name: _ Section: _ Problem #1...

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