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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 Nm) 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.)...
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This note was uploaded on 04/20/2011 for the course ENG 1333 taught by Professor Brr during the Spring '10 term at American College of Computer & Information Sciences.
 Spring '10
 brr
 Statics, Meter

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