GATE Mechanical Engineering (ME) 2012 Solved Paper

Details pertaining to an orthogonal metal cutting process are given below
Chip thickness ratio                                        0.4
Undeformed thickness                                    0.6 mm
Rake angle                                                      +10°
Cutting speed                                                  2.5 m/s
Mean thickness of primary shear zone          25 microns
The shear strain rate in s^-1 during the process is