Determine the joint rotations, Mechanical Engineering

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The rigidly jointed frame shown in Figure has bending stiffnesses such that EIAB = 1000kNm2 and EIBC = EICD = 1600kNm2.

(i) Determine the joint rotations at B and C.

(ii) Hence, plot a bending moment diagram for the frame stating principal values.

(iii) Sketch a displaced shape for the frame.

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