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94_Problem CHAPTER 10

94_Problem CHAPTER 10 - PROBLEM 10.83 A slender rod AB of...

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PROBLEM 10.83 A slender rod AB of negligible weight is attached to two collars A and B that can move freely along the guide rods shown. Knowing that o 30 β = and 100 lb, PQ == determine the value of the angle θ corresponding to equilibrium. SOLUTION Law of Sines () sin 90 sin 90 A yL θβ = °+ cos cos A ββ = or ( ) cos cos A = From the figure: ( ) cos cos cos B L =− Potential Energy: ( ) ( ) cos cos cos cos cos BA VP y Q y P L L Q L βθ  −−   ( ) ( ) sin sin
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