CE 2450 : Final Exam Summer 2012
Document Summary
Summer 2012: write your name and section number on your bluebook and test paper, no questions about test problems will be allowed once the exam begins. For the area shown in the figure, determine the a) area b) centroid, c) d) x , y. Three cables are used to tether a balloon as shown. Points a, b and c are all below the xy plane. Cable a is at an angle of 85 from the positive x-axis and at an angle of 125 from the positive y-axis. Cable b is set in the ground at b (4. 20 m, 2. 40m, -5. 6m). Cable c is in the xz plane and 60 below the xy plane. The ladder ab weighs 10 n and leans against a wall as shown. Assuming that the coefficient of static friction s is the same at a and b, determine the smallest value of s for which equilibrium is maintained.
