Blog

A 83-lb child and a 28-lb cardboard box are on an oak beam. Determine the vertical reaction force at the right end of the beam. Let a = 24 in., b = 33 in., and c = 41 in.

A beam has dimensions of b = 18 in., h = 22 in., and d = 19.5 in. and is reinforced with 4 No. 5 bars. The concrete strength is 7,900 psi, and the yield strength of the reinforcement is 60,000 psi. Determine the strength Mn for this beam.

Gear A has a diameter of 1.64 in., and gear B has a diameter of 2.31 in. If the pointer needs to be rotated 61° CW, how much should the motor be rotated?

A load of P = 11 N is applied to a hex wrench that has lengths a = 19 mm and b = 68 mm. Determine the torque applied to the set screw.

A load of P = 33 N is applied a = 145 mm from the center of a 12 mm bolt. Determine the torque applied to the bolt.

A 21-lb cardboard box sits on an oak beam. Determine the maximum bending moment in the beam if the weight is modeled as concentrated load P = 21 lb. Let a = 53 in.

Determine the magnitude of the largest bending moment (consider both positive and negative peaks) in the beam. Let M = 185 lb·ft, a = 4.2 ft, and b = 9.8 ft. Assume the beam cannot lift off of the supports.

A 33-lb cardboard box sits on an oak beam. Determine the maximum bending moment in the beam if the weight is modeled as concentrated load P = 33 lb. Let a = 54 in.

Gear B has 10 teeth, and gear C has 16 teeth. If a torque of 11 lb·in. and a speed of 1,650 rpm is required at A, determine the minimum power that the motor must provide.

A torque of TC = 930 N·m is applied to the aluminum [G = 68 GPa] shaft. Segment (1) has a diameter of 84 mm, and segment (2) has a diameter of 41 mm. Determine the angle of twist at C. Let L1 = 0.67 m and L2 = 0.39 m.