Determine, using Castigliano's second theorem, the expression of the reaction at the roller in the following beam. The beam is fixed at the left end and subjected to a concentrated force P. It has a...

Extracted text: Determine, using Castigliano's second theorem, the expression of the reaction at the roller in the following beam. The beam is fixed at the left end and subjected to a concentrated force P. It has a constant modulus of elasticity "E", a constant area "A", and a constant area moment of inertia "I". Neglect the effect of shear forces. Select one: 5P/16. 12 127