ch12-p074 - 74(a Computing the torques about the hinge we...

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74. (a) Computing the torques about the hinge, we have sin 40 sin50 2 L TL W °= ° where the length of the beam is L = 12 m and the tension is T = 400 N. Therefore, the weight is 671 N W = , which means that the gravitational force on the beam is ˆ ( 671 N)j w F =− G . (b) Equilibrium of horizontal and vertical forces yields, respectively,
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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