PSE 219 Exam 1

# PSE 219 Exam 1 - PSE 219 Exam 1 Fall 2005 Problem 1(15...

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PSE 219 Exam 1 Fall 2005 Problem 1 (15 points). The triangular body shown below has forces exerted on it as shown (all are perpendicular to applied surfaces). a. Draw in the lines of action of each of the forces. b. Describe/show what you can conclude about whether this system is concurrent and if it is in static equilibrium. 45 lb 80 lb 35 lb 45 º 3” 1” 3” 1” 1” 1

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Problem 2 (25 points). The rod/wire assembly shown below supports a weight of 2000 lb in static equilibrium. The wire is wrapped around a frictionless dowel and attached to the wall so that it is horizontal. The bar is pinned at the wall so that it is free to rotate. (Neglect the weight of the bar and wire.) a. Draw an appropriate Free-body diagram that can be used to determine magnitude of the force in the bar. b. Determine the angle θ that the bar makes with the horizontal axis. c. Determine the magnitude of the force on the bar. θ 2000 lb 2
Problem 3 (30 points). Three cylinders are stacked in a box as shown below. Each cylinder has a weight of 200 kN and a diameter 100 cm.

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PSE 219 Exam 1 - PSE 219 Exam 1 Fall 2005 Problem 1(15...

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