Instructions for Lab 4:

For the final lab, you have a choice of doing one of the projects below. For both labs:

• Work in groups of 2 to 4.
• Due on the last day of class.

AM Radio: Design and build a radio to receive the signal from AM 1030 (That is, the signal has a frequency of 1030 KiloHertz or period of 1/1,030,000 seconds.)

• You must spend under 5 dollars. Extra credit if you spend no money.
• You must include a description (one typed page AT MOST) of the circuit you use as it relates to the harmonic oscillator equations.

Paper Airplane: This is a shortened version of Lab 5.4. You should use the HMSGlider tool on the disk that came with the text and HPGSystemSolver or other phase plane drawing program.

• Consider the system of differential equations given in Lab 5.4. Consider the case of zero drag, compute the equilibria and interpret them physically.
• Increase D slightly and interpret the equilibria and other solutions. The best answer will include "linearization" of the equilibrium.
• Build some paper gliders and determine the value of D which best models them.
• Your write up can be AT MOST two pages (typed).