A dump truck axle with a diameter of 1.621 in. and a length of 38.0 in. failed when the shear stress reached 80 ksi on the outer surface. The shear modulus of the steel is G = 11,300 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

A dump truck axle with a diameter of 1.690 in. and a length of 37.9 in. failed when the shear stress reached 73 ksi on the outer surface. The shear modulus of the steel is G = 11,700 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

A load of P = 14 N is applied to a hex wrench that has lengths a = 29 mm and b = 87 mm. Determine the torque applied to the set screw.

A load of P = 20 N is applied to a hex wrench that has lengths a = 28 mm and b = 109 mm. Determine the torque applied to the set screw.

A dump truck axle with a diameter of 1.620 in. and a length of 37.8 in. failed when the shear stress reached 79 ksi on the outer surface. The shear modulus of the steel is G = 11,300 ksi. Assuming the shaft did not yield prior to failure, determine the angle of twist of the axle when it failed.

The solid circular steel shaft of a screwdriver is subjected to a pure torque of T = 23 lb·in. The shaft has a diameter of 0.234 in. and a length of L = 3.75 in. The shear modulus of the steel is G = 11,300 ksi. Determine the magnitude of the angle of twist of the shaft in degrees.

A steel [E = 30,300 ksi, G = 11,900 ksi] socket extension (2) has a diameter of 0.32 in. and a length of L = 2.3 in. It connects socket (3) to ratchet handle (1) which is 4.9 in. long. If a perpendicular force of 7.0 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 0.495 in. and a length of L = 4.25 in. For a factor of safety of 1.7 and a shearing yield strength of 21 ksi, determine the maximum torque T that can be applied to the shaft.

Predict your score for this test from 0% to 100%. You must make this prediction before you start the test to be considered for a bonus. 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.