ENES_102_final_exam_problems

# ENES_102_final_exam_problems - Problem#5(20 points A...

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Problem #5 (20 points): A uniform block of width, b , height, h , and weight, W , is on an inclined plane with an angle, φ , and coefficient of friction, μ . (a) In terms of the quantities given, develop an expression for φ when the block slips. (b) Develop a similar relation for φ when the block tips. (c) Using the formulas from parts (a) and (b), how can you determine if the block will slip or tip? W φ b h μ

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Problem #2 (20 points): The elbow AB is attached to the smooth square rod at A with a loose fitting collar, and is supported by cable BC. Note that the collar allows motion along the pole only; motion in other directions is prevented. Find the tension in the cable (T BC ) and ALL components of the reaction at A (A x , A y , M Ax , M Ay , M Az ). The force F = -300 k lbs.
Problem #4 (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.

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