Explain why the engineers in the following scenario chose to use 1:10 scaling. Situation: A car manufacturer is attempting to improve the engine design of hybrid automobiles. The engine is approximately one and a half meters long by one meter wide. The design team prepares a series of pictorial drawings specifying the engine features.

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.