1.  A can of soup lies on its side at the top of a ramp
      of length L and slope theta.  The can is initially
      at rest, and its then released.  

        a. How fast will the soup be moving when it reaches
                the bottom of the ramp?
        b. How long will take to roll down the ramp?
        c. Which will reach the bottom faster, an empty can
                or a full can?


  2.  Show that an ideal pendulum exhibits simple harmonic motion.



  3.  Joe shines light of wavelength lambda through a pair
      of slits.  Each slit has width w, and the two are
      separated by a distance d.  The light passes through
      the slits and falls on a wall a distance L away.

        a. Describe the pattern of light on the wall.
        b. How far from the center is the second bright spot?
        c. What happens to the pattern if the width w
                of the slits is increased?
        d. What happens to the pattern if the separation d
                of the slits is increased?