Athree-point bending test is performed on a glass specimen having a rectangular cross section of height d=5mm and width b=10mm; the distance between support points is 45mm.
a) compute the flexural strength of the load at fracture is 290n.
b) the point at maximum deflection delta(y) occurs at the center of the specimen and is described delta(y)=fl^3/48ei, where e is the modulus of elasticity and i is the cross-sectional moment of inertia. compute delta(y) at a load of 266n.