27. (a) We note that the angle between the cable and the strut is α=θ– φ= 45º – 30º = 15º. The angle between the strut and any vertical force (like the weights in the problem) is β= 90º – 45º = 45º. Denoting M= 225 kg and m= 45.0 kg, and Aas the length of the boom, we compute torques about the hinge and find ()2sinsinsinsin/ 2.sinsinMgmgMgmgTββαα++==AAAThe unknown length
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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.