The structure illustrated below is supported by two pivots at points A and D and a cable attached at E supports a mass of 100 kg. The weight of the structure (frames and pulley) as well as the friction of the pulley are negligible. Determine the forces on the AB and BCD chords.

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Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.