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Unformatted text preview: e--PROBLEM I (20 points)(.Y.3. r3. 23)NorE: THrs rs A gD 'R.BLEM consicler the c:able and rocr s;,s-tem in Figure l.(a) Nea,tly draw a freebocrv cliagram for each c::rble and the frame. F is avector.(b) sum the forces ancr moments for the frame, resurting in a systenrof 6 equations ancl 6 unknowns. In these equations, there should only b_e6--unknowns. (D" -1:t^:olve the equations.) Iaentify the 6 unknowns.(NOtC: SET UP YOU CAN LEAVE dOIUTIOIVS rrV rbNIrS OF CROSSPRODUCTS)Hint: Use vector form; do not find any angles.!/(.\'2,Y2.22)\r,-PROBLEM 2 (30 points)L, IvtL_>X\r.lConsider the truss system in Figure 2.(a) Neatly draw a freebody diajram for the entire system (do not breakit rrp, yet).(b) Determine the reaction forces at the supports.(c) Draw the freebody diagram for each joint. please use the labels givenon.the test for the joints, for example a, and ea are the reactions at point a"-and truss force in member a-b is f|6/ r\ n_ (o1 tor each.;ornt, sum (express the equations) in the x and y directions....
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This note was uploaded on 03/28/2012 for the course C 85 taught by Professor Papadopoulos during the Spring '08 term at University of California, Berkeley.
- Spring '08