In an orthogonal cutting test, the following observations were made
Cutting force – 120N; Thrust force = 500N
Tool rake angle = zero; Cutting speed = 1 m/s
Depth thickness = 1.5 mm
Friction angle during machining will be
(a) 22.6 (b) 32.6 (c) 57.1 (d) 67.4
Chip speed along the took rake face will
(a) 0.83 m/s (b) 0.53 m/s (c) 1.2 m/s (d) 1.88 m/s