Author: Anonymous

An aluminum [E = 14,160 ksi] bar is bonded to a steel [E = 26,950 ksi] bar to form a composite beam as shown. The composite beam is subjected to a bending moment of M = +266 lb-ft about the z axis. If the centroid of the equivalent all-aluminum beam is 0.578 in. above the bottom surface of the beam, and the moment of inertia about the z axis of the equivalent all-aluminum beam is 0.1683 in.4, find the magnitude of the maximum bending stress in the steel.

An aluminum [E = 7,880 ksi] bar is bonded to a steel [E = 31,850 ksi] bar to form a composite beam as shown. The composite beam is subjected to a bending moment of M = +368 lb-ft about the z axis. If the centroid of the equivalent all-aluminum beam is 0.651 in. above the bottom surface of the beam, and the moment of inertia about the z axis of the equivalent all-aluminum beam is 0.2291 in.4, find the magnitude of the maximum bending stress in the steel.

A 80-lb child and a 25-lb cardboard box are on an oak beam. Determine the vertical reaction force at the left end of the beam. Let a = 20 in., b = 29 in., and c = 43 in.

For a beam with the cross-section shown (w = 18 in. and h = 6 in.), find the distance from the bottom surface of the beam to the centroid.

A steel pipe (D = 3.500 in.; d = 3.068 in.) supports a concentrated load of P = 713 lb as shown. The span length of the cantilever beam is L = 2 ft. Determine the magnitude of the maximum bending stress in the pipe.

If P = 170 kN, determine the normal stress produced at point H of the pier support shown.

An aluminum [E = 8,150 ksi] bar is bonded to a steel [E = 29,000 ksi] bar to form a composite beam as shown. Find the distance to the centroid of the transformed section from the bottom surface of the beam.

If M = 9.5 kip-ft, find the magnitude of the bending stress at a point 2.76 in. above the bottom surface of the beam. The moment of inertia about the z axis is 124.9 in.4, and the centroid of the section is located 4.7 in. above the bottom surface of the beam.

An aluminum [E = 7,750 ksi] bar is bonded to a steel [E = 31,650 ksi] bar to form a composite beam as shown. Find the distance to the centroid of the transformed section from the bottom surface of the beam.

A 70-lb child and a 36-lb cardboard box are on an oak beam. Determine the vertical reaction force at the left end of the beam. Let a = 24 in., b = 35 in., and c = 45 in.