Problems $21\mathrm{.}2\mathrm{.}2.$

Plot in MATLAB $10$ cycles of $100$ Hz tone of amplitude $2$ mm and a $30$ shifted version of the same tone. Plotting in MATLAB is covered in chapter $44.$ Be sure to label the axes and make everything easily readable.

$21\mathrm{.}8$ Complex Exponential Notation

$51$

Section $21\mathrm{.}4$: State and Degrees of Freedom $($DoF$)$ of a System

Problems $21\mathrm{.}4\mathrm{.}1$

Determine the number of degrees of freedom of the system shown in $21\mathrm{.}8\mathrm{.}8.$ List the generalized coordinates that can be used to define the state of this system.

Figure $21\mathrm{.}8\mathrm{.}8$: A system.