A bar of Al2O3 that is 0.25 in. thick, 0.5 in. wide, and 9 in. long is tested in a three-point bending apparatus, with the supports located 6 in. apart. The deflection of the center of the bar is measured as a function of the applied load. The data are shown below. Determine the flexural strength and the flexural modulus?

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Force (lb) 14.5 28.9 43.4 57.9 86.0 Deflection (in.) 0.0025 0.0050 0.0075 0.0100 0.0149 (fracture)