Question: A beam ABCD rests on simple supports at B and C (see figure). The beam has a slight initial curvature so that end A is

A beam ABCD rests on simple supports at B and C (see figure). The beam has a slight initial curvature so that end A is 18 mm above the elevation of the supports and end D is 12 mm above. What moments M1 and M2, acting at points A and D, respectively, will move points A and D downward to the level of the supports? (The flexural rigidity EI of the beam is 2.5 x 106N ˆ™ m2 and L = 2.5 m).

M, 18 mm 12 mm L D

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