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Unformatted text preview: cables. If the forces of these cables acting on the antenna are F B = 520 N, F C = 680 N, and F D = 560 N a) Determine the magnitude of the resultant force. b) Determine the coordinate direction angles of the resultant force. 2. The lamp has a mass of 15 kg and is supported by a pole AO and cables AB and AC . If the force in the pole acts along its axis, a) Determine the unit vectors along AO , AB , and AC b) Determine the forces along the cables AO , AB , and AC for equilibrium. 3. Two men exert forces of F=80lb and P=50lb on the ropes. a) Determine the moment of each force about A . b) Which way will the pole rotate, clockwise or counterclockwise? c) If the man at B exerts a force P=30lb of on his rope, determine the magnitude of the force F the man at C must exert to prevent the pole from rotating, i.e., so the resultant moment about A of both forces is zero....
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This note was uploaded on 01/04/2012 for the course STATICS 440:221 taught by Professor Albertocuitino during the Spring '11 term at Rutgers.
 Spring '11
 AlbertoCuitino

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