In an orthogonal cutting operation,
The depth of cut = 2mm,
Width of cut = 15 mm,
Cutting speed = 0.5 m/s and
The rake angle = 0 deg.
The cutting force and the thrust force are respectively 900 N and 600 N and the shear angle = 30 deg.
i) The average coefficient of friction between the chip and the tool is
(a) 1/3 (b) 3/5 (c) 2/3 (d) none
ii) The cutting power in watts is
(a) 300 (b) 450 (c) 600 (d) 750
iii) The length of the shear plane is
(a) 30mm (b) 15mm (c) 10mm (d) 4mm