Extracted text: The bar has constant diameter of 100 mm and is composed of two different materials. The two ends A and C are fixed to the wall. An external load P of 380 kN is applied at point D. The modulus of elasticity of part AB and BC is 80 GPa and 200 GPa, respectively. Determine the reactions at ends A and C. В D A -P C 600 200 200 Dimensions in mm