“The Revolting Blob” Trey CarrierStephen PhillipsAaron MesserJordan Davis

Purpose  Turn on a lamp shaped like a teddy bear

Overview  Ball is launched using elastic energy down a tube

Overview  Ball proceeds down a ramp with a slight incline towards a pivot

Overview  Ball hits a pivot which in turn hits another ball

Overview  Second ball rolls down another ramp towards a funnel

Overview  Ball goes through the funnel and down another ramp  Flicks a switch

Overview  The lamp turns on as a result of hitting the switch

Energy Conversions & Equations  0-1: Elastic  KE  1-2: KE + PE + E loss  KE  2-3: KE + PE + E loss  KE  3-4: KE + E loss  KE  4-5: KE + PE + E loss  KE  5-6: KE + PE + E loss  KE  6-7: KE + PE + E loss  KE

Conclusions  Elastic energy makes a good initial source of energy  Funnels are useful to create straight drops  The bottom of a chopped off funnel covered with duct tape makes a great golf ball holder  Device is pretty inefficient; the velocity of the ball hitting the switch is much smaller than the velocity of the ball being launched due to collisions and friction