Mechanics of Materials notes

Beer and Johnston. Mechanics of Materials. 8th Edition. McGraw-Hill. Chapter 3 Practice Problems 3.1: Determine the torque T that causes a maximum shearing stress of 70 MPa in the steel cylindrical shaft shown 3.10: The shafts of the pulley assembly shown are to be redesigned. Knowing that the allowable shearing stress in each shaft is 8.5 ksi, determine the smallest allowable diameter of (a) shaft AB, (b) shaft BC 3.28: A torque T=900 Nm is applied to shaft AB of the gear train shown. Knowin...

Beer and Johnston. Mechanics of Materials. 8th Edition. McGraw-Hill. Chapter 3 Practice Problems 3.1: Determine the torque T that causes a maximum shearing stress of 70 MPa in the steel cylindrical shaft shown 3.10: The shafts of the pulley assembly shown are to be redesigned. Knowing that the allowable shearing stress in each shaft is 8.5 ksi, determine the smallest allowable diameter of (a) shaft AB, (b) shaft BC 3.28: A torque T=900 Nm is applied to shaft AB of the gear train shown. Knowin...

Homework 2.1 A plastic wire is pulled by a tensile force of 4 N, and its length increases by 1%. If the plastic has elastic modulus of 4 GPa. Assuming deformation is well within elastic limit, please calculate (a) average normal stress in the wire and (b) the diameter of wire. Homework 2.2 The 4 mm diameter metal wire EF has modulus E = 200 GPa. If the maximum stress should not be higher than 250 MPa, and the elongation of the wire should NOT be longer than 5 mm. Please calculate the maximum lo...