An orthogonal cutting operation is being carried out under the following conditions: to $=$

$0\mathrm{.}1$ mm$,$ tc $=0\mathrm{.}2$ mm$,$ width of cut $=5$ mm$,$ V $=2$ m$/$s$,$ rake angle $=100,$ Fc $=500$ N$,$ and

Ft $=200$ N$.$

a$.$ Determine the cutting ratio

b$.$ Determine resultant force