Plywood strength. How strong is a building material such

Chapter , Problem 2.173

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Plywood strength. How strong is a building material such as plywood? To be specific, support a 24-inch by 2-inch strip of plywood at both ends and apply force in the middle until the strip breaks. The modulus of rupture (MOR) is the force needed to break the strip. We would like to be able to predict MOR without actually breaking the wood. The modulus of elasticity (MOE) is found by bending the wood without breaking it. Both MOE and MOR are measured in pounds per square inch. Here are data for 32 specimens of the same type of plywood MOE MOR MOE MOR MOE MOR MOE MOR2,005,400 11,591 1,774,850 10,541 2,181,910 12,702 1,747,010 11,7941,166,360 8,542 1,457,020 10,314 1,559,700 11,209 1,791,150 11,4131,842,180 12,750 1,959,590 11,983 2,372,660 12,799 2,535,170 13,9202,088,370 14,512 1,720,930 10,232 1,580,930 12,062 1,355,720 9,2861,615,070 9,244 1,355,960 8,395 1,879,900 11,357 1,646,010 8,8141,938,440 11,904 1,411,210 10,654 1,594,750 8,889 1,472,310 6,3262,047,700 11,208 1,842,630 10,223 1,558,770 11,565 1,488,440 9,2142,037,520 12,004 1,984,690 13,499 2,212,310 15,317 2,349,090 13,645