A 1 × 2  block of wood was tested in a compression test. The original length of the block...

A 1 × 2  block of wood was tested in a compression test. The original length of the block was 4.50 in. Deformation of the specimen was measured at the force intervals noted in Table E10.4.

(a) Calculate the stress and strain at each force interval.

(b) Plot a graph of the stress-strain curve.

(c) Estimate the ultimate strength. Note its location on the curve.

Table E10.4 TENSILE TEST OF WOOD: OBSERVED DATA