Page 131 - Schaum's Outline of Differential Equations

CHAPTER 14

Applications of

Second-Order

Linear Differential

Equations

SPRING PROBLEMS
The simple spring system shown in Fig. 14-! consists of a mass m attached lo the lower end of a spring
that is itself suspended vertically from a mounting. The system is in its equilibrium position when it is at rest.
The mass is set in motion by one or more of the following means: displacing the mass from its equilibrium
position, providing it with an initial velocity, or subjecting it to an external force F(i).

Posiiive.v-diretrion
Fig. 14.1

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