Chapter 12 Equilibrium & Elasticity

Learning Objectives:

In this chapter you will basically learn:

\(\bullet\) Distinguish between equilibrium and static equilibrium.

\(\bullet\) Specify the four conditions for static equilibrium.

\(\bullet\) Explain center of gravity and how it relates to center of mass.

\(\bullet\) Apply the force and torque conditions for static equilibrium.

\(\bullet\) For tension and compression, apply the equation that relates stress to strain and Young’s modulus.

\(\bullet\) Distinguish between yield strength and ultimate strength.

\(\bullet\) For shearing, apply the equation that relates stress to strain and the shear modulus.

\(\bullet\) For hydraulic stress, apply the equation that relates fluid pressure to strain and the bulk modulus.

12.1 Equilibrium, Elasticity, Young’s Modulus, Shearing, Hydraulic Stress.

(Solved Problems : 3, 10, 15, 17, 43, 45)