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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.

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