The figure below shows a simply supported beam with a vertical spring at the mid-span. The beam is made of steel with Young’s modulus, E = 210GPa, and the second moment of area, I = 5000cm4. a) Compute the stiffness coefficient for a vertical downward force and displacement at B. b) Compute the deflection (in mm) at B induced by a vertical load P of 150kN acting downward. c) Compute support reactions at A, B and C induced by P.

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