Hobo's delight

1. Hobo's delight Rachel Dunlap Kayla Hughes Richard Ammons

2. The Device • Cars collide spinning the center of mass and triggering the domino’s. • The Domino’s fling the marble into the funnel. • The marble goes down the tubing on the funnel and hits another marble • This marble starts the smaller marbles and they proceed down the steel structure. • The final marble hits the big ball and it rolls down the wood to turn the light on.

3. Energy • Conservation of Linear Momentum • Collision • Cars crashing • Projectile Motion • Ball projected from domino into funnel • Conservation of Energy • Rotational Kinetic Energy • Ball rolling down hill • Center of Mass • Wood piece balancing on nail

4. Budget Time Item • Domino’s • Tubing • Marbles • Boxes • Wood • Cars • Steel • Funnel • Light system • Nails TOTAL Cost $ 0.50 2.00 1.00 5.00 2.50 1.00 2.00 0.75 4.00 0.50 19.25

5. Conclusion • Troubles • Getting the ball down the tubing to trigger the other marble without it flying off of the steel structure. • Placing the domino that projects the marble in the right spot. • Making sure the big ball at the end would be hit by the marble. • Conclusion • Fun • Time consuming to get it to work just right