Three boards, each 2 in, thick, are nailed together to form a 6 ft long beam that is subjected to a uniform distributed load. knowing that the allowable shearing force in each nail is 150 lb and that the spacing s between the nails is 5 in, determine the maximum allowable distributed load.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.