The rigid bars AC and BCD are supported by pins at A and B and by a steel rod at D. There is a roller connection between the bars at C. Compute the vertical displacement of point D caused by the loading. Cross-sectional area of rod is 250 mm² and E = 200 GPa.

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Moments

There are various practical applications of the concept of moments, like a rotation of the crank due to linear motion of the piston, the moment of inertia and its use in designing beams and columns, bending moment concept, torque, twisting moment, etc.