To restore joint b to its initial position in the


Question: (a) Find the horizontal deflection at joint B produced by the 40-kip load in Figure P8.14. The area of all bars is shown on the sketch of the truss; E = 30,000 kips/in.2.

(b) To restore joint B to its initial position in the horizontal direction, how much must bar AB be shortened? (c) If the temperature of bars AB and BC increases 80°F, determine the vertical displacement of joint C. αt = 6.5 × 10-6 (in./ in.)/°F. The rocker at support A is equivalent to a roller.

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Mechanical Engineering: To restore joint b to its initial position in the
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