2)

Size the diameter of the axis in the given structure when the material's allowable normal stress is 65

N/mm². The angle 8 is 45°, and the radii of the pulleys are 80 mm and 150 mm."

300 mm

250 mm

200 mm

65 N

80 mm

A

80 N

z

0

-150 mm

B

T

-50 N

y