This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: o ) 4. A round axle (see figure) is made of oak having an allowable stress in shear, parallel to the grain, of 2 MPa. If the axle has a diameter of 60 mm , what is the maximum permissible torque T that can be applied? (Ans. 84.8 N-m) 5. What length is required for a solid steel shaft 12 mm in diameter so that the cross section at one end can be rotated 90 o with respect to the other end without exceeding an allowable shear stress of 70 MPa in the shaft? (Assume G=80GPa .) (Ans. 10.8m) 6. A solid steel bar of circular cross section is twisted by torques applied at the ends (see figure). If the angle of rotation of the cross section at one end with respect to the other end is 0.05 rad , what is the maximum shear stress max and maximum shear strain max in the bar? (The bar has length L=2 m , diameter d=40 mm , and G=80 GPa .) (Ans. 40 MPa, 0.0005 rad.)...
View Full Document