In an orthogonal cutting the following data is observed:
Uncut chip thickness = 0.16 mm
Cut chip thickness = 0.35 mm
Width of cut = 4 mm
Cutting speed = 30 m/min
Cutting force component parallel to machined surface = 150 kgf
Cutting force component normal to machined surface = 30 kgf
Rake angle of tool = 15°
Determine the horsepower required, shear plane angle, and average coefficient of friction on the tool rake face.