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A steel [E = 30,500 ksi, G = 11,900 ksi] socket extension (2) has a diameter of 0.63 in. and a length of L = 1.0 in. It connects socket (3) to ratchet handle (1) which is 8.9 in. long. If a perpendicular force of 18.0 lb is applied to the end of the ratchet handle, determine the maximum shear stress in the socket extension.

A load of P = 14 N is applied to a hex wrench that has lengths a = 48 mm and b = 170 mm. Determine the torque applied to the set screw.

A torque of 27 lb·in. is applied to one end of a 4-in.-long composite shaft that consists of two polymer tubes. The outer tube has a polar moment of inertia of 0.0476 in.4 and a shear modulus of 170 ksi. The inner tube has a polar moment of inertia of 0.0188 in.4 and a shear modulus of 160 ksi. Determine the magnitude of the torque produced in the inner tube.

A torque of 28 lb·in. is applied to one end of a 5-in.-long composite shaft that consists of two polymer tubes. The outer tube has a polar moment of inertia of 0.0523 in.4 and a shear modulus of 190 ksi. The inner tube has a polar moment of inertia of 0.011 in.4 and a shear modulus of 180 ksi. Determine the magnitude of the torque produced in the inner tube.

Predict your score for this test from 0% to 100%. You must make this prediction after you finish the test to be considered for the bonus (This should be the last question you answer). If your answer is within 5%, you will receive three bonus points. Note that it is in your best interest to give the best answer possible. I will randomly pick between this question and the first one you answered by flipping a coin, and use that question for everyone in the class to determine the bonus points.

A baby-swing motor provides 0.34 W at 5,500 rpm to a shaft that has a diameter of 2.29 mm and a length of 12.4 mm. Determine the maximum shear stress in the shaft.

A torque of 22 lb·in. is applied to one end of a 5-in.-long composite shaft that consists of two polymer tubes. The outer tube has a polar moment of inertia of 0.046 in.4 and a shear modulus of 180 ksi. The inner tube has a polar moment of inertia of 0.00687 in.4 and a shear modulus of 175 ksi. Determine the magnitude of the torque produced in the inner tube.

A steel [E = 30,400 ksi, G = 11,700 ksi] socket extension (2) has a diameter of 0.62 in. and a length of L = 1.3 in. It connects socket (3) to ratchet handle (1) which is 8.6 in. long. If a perpendicular force of 24.0 lb is applied to the end of the ratchet handle, determine the maximum shear stress in the socket extension.

The solid circular steel shaft of a screwdriver is subjected to torque T. The shaft has a diameter of 0.528 in. and a length of L = 4.50 in. For a factor of safety of 2.2 and a shearing yield strength of 16 ksi, determine the maximum torque T that can be applied to the shaft.

The solid circular steel shaft of a screwdriver is subjected to torque T. The shaft has a diameter of 0.489 in. and a length of L = 4.25 in. For a factor of safety of 1.8 and a shearing yield strength of 19 ksi, determine the maximum torque T that can be applied to the shaft.