A three-point bend test is performed on a block of ZrO2 that is 8 in. long, 0.50

Question:

A three-point bend test is performed on a block of ZrO2 that is 8 in. long, 0.50 in. wide, and 0.25 in. thick and is resting on two supports 4 in. apart. W hen a force of 400 lb is applied, the specimen deflects 0.037 in. and breaks. Calculate
(a) The flexural strength; and
(b) The flexural modulus, assuming that no plastic deformation occur s.