100 4 in. 1 in.T y -10 in--10 in.- Prob. 9–48

Bar A has diameter 'd' and bar B has diameter '2d'. Both are of the same length and are of the same material. If they are subjected to same axial load P, the ratio of extension of bar A to B is (B) 2 (A) 4 (C) 0.5 (D) 0.25

6 - A circular shaft is composed of a steel core and a brass covering, as shown in the figure. Under the applied torque, what is the maximum shear stress in each material? The composite shaft is attached to a wall at A. Im B OPT. →→→→T= 5 KN•m Steel core r=15mm G=78 GPa bross cylinder ro=20mm (outer diameter) G=39 GPa

2. (3 points) When loading is applied at a point on a body, the stress distributions at different cross sections are different. However, the stress distribution becomes uniform at locations far from the applied load. This is due to which principle? Name the principle. P Load distorts lines located near load P P C C Lines located away from the load and support remain straight P O avg A section a-a section b-b section c-c -Load distorts lines located near support Your answer