1. Equilibrium means balanced or zero net force.
Chaptrer 9 Equilibrium
Equilibrium means balanced or zero net force.
Equilibrium exists if an object is at rest or constant velocity.
F=ma
See Examples 9-1 and 9-2

2. 9-2 The Conditions of Equilibrium
Sfx = 0
Sfy = 0
Sfz = 0
St = 0
See Example 9-3 p243
See Example 9-4 p244
See Holt Example 8b online

3. 9-3 Solving Statics Problems
See steps page 245
Sfx = 0
Sfy = 0
Sfz = 0
St = 0
Draw a well-labeled diagram
Pick pivot points wisely.
Substitute or combine equations.
See Example 9-6 p246

4. Homework Page 266 problems 1-8 due next BOP
Also…begin work on Holt problem 8b#2 due by Wednesday.