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HW 9 #3ABC

# HW 9 #3ABC - ll8 Ch a pt er 5 FREE-B O D Y I A GR A M E X E...

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ll8 Chapter 5 FREE-BODY DIAGRAM EXERCISES I/A In each of the flve following examples, the body to be isolated is shown in the left-hand diagram, and an iz- complete free-body diagram (FBD) of the isolated body is shown on the right. Add whatever forces are necessary in each case to form a complete diagram. The weights of the bodies are negligible less otherwise indicated. Dimensions and values are omitted for simplicity. Body Incomplete FBD 1. Bell crank supporting mass rz with pin support atA. 2. Control lever applying torque to shaft at O. Fo 3. Boom OA. of negligible mass compared with mass rz. Boom hinged at O and supported by hoisting cable at B. 4. Uniform crate of mass //, leaning against smooth vertical wall and supported on a rough horizontal surface. 5. Loaded bracket supported by pin connection atA and fixed pin in smooth slot at B. Figure 5lA

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Free-Body Diagram Exercises tt9 l/B In each ofthe five followinS examples, the body to be isolated is shown in the left_hand il;;;, to "rrh""
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