Determine the percent reduction n in the polar moment of inertia of the square plate due to the introduction of the circular hole. Assume a = 1.6R. a Answer: n = | i a a a %

The toggle-wedge is an effective device to close the gap between two planks during construction of a wooden boat. For the combination shown, if a force P of 275 lb is required to move the wedge, determine the friction force F acting on the upper end A of the toggle. The coefficients of static and kinetic friction for all pairs of mating surfaces are taken to be 0.34. Assume 0 = 15%, p = 7° P Ꮎ Answer: F = i A lb

The circular shaft AB consists of a 18 mm diameter solid steel cylinder in which a 8 mm diameter hole has been drilled from end B up to point C. The shaft is attached to fixed supports at each end, and a 150 Nm torque is applied at C. The torque reaction at A is 50 Nm. Determine the ratio of lengths L₁/L₂. Input your answer to two decimal places. 4₁ L₂ A 150 Nm B

Bar ABC is rigid and rotates freely about B. The loads consist of a point load and a uniform temperature change in both bars CD and EF. Determine the temperature change (AT) at which points A and E first come into contact. Report your answer rounded to the nearest degree. 100 in initial gap = 0.11 in F T E A = 2.0 in² AEF EEF = 12,000 ksi aEF LEF 100 in = 13.5 x 10-6 1/°F = 50 in B 14 k 100 in D с ACD= 1.5 in² ECD CD= 6.5 x 10-6 1/°F = 29,000 ksi = 150 in LCD Y Z

I need a numerical answer for this question rounded to two decimal places, as the box will not let me enter any letters or fractions. As you can see the answer 0.25 was incorrect. If you could circle or bold the answer I would greatly appreciate it. Will rate immediately.

I will rate immediately, thank you!