Find the amplitude, if it exists, and period of each function. Then graph each function. 19. See Ch. 14 Answer Appendix. 1. y = _1 2 sin

Chapter 14 An object at rest is in static equilibrium. Equilibrium is when an object has constant translational and rotational momenta. Stable static equilibrium is when after being released forces return the object back to its equilibrium position. An example of this is a marble at the bottom of a bowl. Unstable static equilibrium is when after being released the object is farther from its equilibrium position. This is like releasing a marble at the top of a bowl. Neutral static equilibrium would be a marble released on a level surface. Two conditions need to be met for an object to be at equilibrium: dp 1. F = F =0 tot dt tot dL τtot τ tot 2. dt Using these conditions is how to solve the problems where people are