Calculate the maximum y direction force for a 40% radial immersion downmilling cut carried out

Calculate the maximum y direction force for a 40% radial immersion downmilling cut carried out using a three tooth end mill; see Fig. e.4)3) Thematerial-tool combination gives: kt ¼ 720N=mm2 and kn ¼ 200 N/mm2(aluminum alloy). Also, b = 2)5 mm and ft = 0.2 mm/tooth. Assume arigid cutting tool and workpiece.