1. Determine the time in seconds, to saw a rectangular magnesium material bar 5 inches wide and 2 inches thick, if the length of cut is 5 inches. The power hacksaw does 120 strokes per minute and feed stroke is 0.127 mm.
Time = Length to be cut
120 strokes/min (0.005 inches/stroke)
= 8.33 min or 500 secs answer