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366_Physics ProblemsTechnical Physics

# 366_Physics ProblemsTechnical Physics - 368 P12.46 Static...

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368 Static Equilibrium and Elasticity P12.46 τ point 0 = 0 gives T T cos . sin . sin . cos . cos . cos . 25 0 3 4 65 0 25 0 3 4 65 0 2 000 65 0 1 200 2 65 0 ° ° F H G I K J + ° ° F H G I K J = ° + ° F H G I K J a f a f b ga f b g A A A A N N From which, T = = 1 465 1 46 N kN . From F x = 0, H T = °= = cos . . 25 0 1 328 1 33 N toward right kN b g From F y = 0, V T = °= = 3 200 25 0 2 581 2 58 N N upward kN sin . . b g H V 65.0° 1 200 N l 2 000 N 3 4 l T sin . 25 0 ° T cos . 25 0 ° FIG. P12.46 P12.47 We interpret the problem to mean that the support at point B is frictionless. Then the support exerts a force in the x direction and F F F F F g By x Bx Ax Ay = = = + = 0 0 3 000 10 000 0 b g and τ = − + = 3 000 2 00 10 000 6 00 1 00 0 g g F Bx b ga f b ga
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