![An orthogonal cutting operation is being carried out in which uncut thickness is 0.010 mm, cutting speed is 130 m/min](https://www.gkseries.com/blog/wp-content/uploads/2023/10/An-orthogonal-cutting-operation-is-being-carried-out-in-which-uncut-thickness-is-0.010-mm-cutting-speed-is-130-mmin.jpg)
Q. An orthogonal cutting operation is being carried out in which uncut thickness is 0.010 mm, cutting speed is 130 m/min, rake angle is 15° and width of cut is 6 mm. It is observed that the chip thickness is 0.015 mm, the cutting force is 60 N and the thrust force is 25 N. The ratio of friction energy to total energy is___________________(correct to two decimal places).
Ans: 0.4408
![](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Screenshot-1049.png)