1) A composite, reinforced with continuous and aligned glass fibers, consists of 40% glass fibers with a modulus of elasticity of 69 GPa and 60% of a polyester resin which, when hardened, exhibits a modulus of 3.4 GPa. In this way, determine:

(A) The modulus of elasticity of this composite in the longitudinal direction.

(B) If the cross-sectional area is 250 mm² and if a stress of 50 MPa is applied in this longitudinal direction, what is the magnitude of the load supported by the matrix and fiber, respectively.

(C) What is the strain supported by each phase when the stress in part (b) is applied.

a) 43 GPa/ 860 N and 12500N/ 0,69 x 10³ and 0,69 x 10³

b) 30 GPa/ 860 N and 11640N/ 1,69 x 10³ e 1,69 x 10³

c) 30 GPa/ 860 N and 11640N/ 0,69 x 10³ and 0,69 x 10³

d) 43 GPa/ 860 N and 11640N/ 1,69 x 10³ and 1,69 x 10³