Answer to Question #4622 in Algebra for jacqui

Question

workpiece turned on lathe of a feed rate of 0.2mm/rev and cut takes 8mins to complete. If feed rate increases to 0.5mm/rev how long will it take to complete the cut?

Answer 1

Speed(mm/rev) time(min) = Cut, as the length& of cut is constant, Speed1 time1 =
Speed2 time2, time2 = speed1 time1/speed2 = 0.2 8/0.5 = 3.2 min
Hence X = 0.2 8/0.5 = 3.2 min