Example $10.$ During machining of C$-25$ steel with $0-10-6-6-8-90-$ mm $($ORS$)$ shaped tripple carbide cutting tool, the following observations have been made:

Depth of cut

$=2$mm

Feed

$=0\mathrm{.}2$mm $/$ r $*$ ev

Speed

$=200$m $/$ m $*$ in

Tangential cutting force

$=1600$N

Feed thrust force

$=850$N

Chip thickness

$=0\mathrm{.}39$mm

Calculate:

$(1)$ Shear force

$($ii$)$ Normal force at shear plane

$($iii$)$ Friction force

$($iv$)$ Kinetic co$-$efficient of friction

$($v$)$ Specific cutting energy.