364_Physics ProblemsTechnical Physics

364_Physics ProblemsTechnical Physics - 366 P12.42 Static...

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366 Static Equilibrium and Elasticity P12.42 Call the normal forces A and B . They make angles α and β with the vertical. FAB FA M g B x y =− = + = 00 :s i n s i n :c o s c o s αβ Substitute B A = sin sin AA M g AM g g BM g cos cos sin sin cos sin sin cos sin sin sin sin sin += = + = + bg M g A B M g A sin B sin cos B cos FIG. P12.42 P12.43 (a) See the diagram. (b) If x = 100 . m, then τ O T +°= 700 1 00 200 3 00 80 0 6 00 60 0 6 00 0 N m m m m a fa f a fa f af a f .. sin . . Solving for the tension gives: T = 343 N . R y x 3.00 m O 3.00 m R x 60.0° T 700 N 200 N 80.0 N FIG. P12.43 From F x = 0, RT x = cos
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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