A coping saw frame shown in Figure P3–82 is made from SAE 1020 CD steel. A screw thread in the handle draws the blade of the saw into a tension of 120 N. Determine the resulting design factor based on yield strength in the area of the corner radii of the frame. 

Data in Figure P3–82

Transcribed Image Text:

- r = 22 mm 140 mm 10 mm Cross section of frame I 4 mm 10 mm