Open An Umbrella
Online Division I - Ages 11 - 14 (Middle School)
What we're studying:
Everything!!!Our Team Leader's favorite quote:
"It's the age of the geek, baby!"Suggestion for next year's challenge:
open a bookFavorite Rube Goldberg video:
To open an umbrella we only used items in our science classroom or from home. In order to perform this simple task we used: a projectile launcher, fan, ring stand, steel balls, rubber balls, weights, a cooler, power strip, mechanical pencil, washers, totes, science books, boxes, ramps, collector's and lego cars, a pendulum, egg crates (the missing piece we needed!), pvc pipe, catapult, our favorite childhood games, foam moon phases, cardboard tunnels, buckets of water, yarn, a CFL box, straws, LOTS of duck tape and a recycled, "injured" umbrella! ?
Our Step List
1)A teammate ( Guosong) releases the washer from the projectile launcher. The wood block springs forward and pushes a metal ring stand rod.
2) The rod hits a steel ball.
3) The steel ball rolls down the tube and drops onto the catapult axle.
4) The axle swings out of the way releasing the pendulum. (Aka the Blue rubber ball hanging from the light fixture.)
5) The Pendulum hits the light bulb box that is blocking a car from rolling down a ramp. The car is released and goes down a wooden ramp.
6) At the bottom of the ramp the car hits a book causing a domino effect.
7) The 4th book lands on a rubber ball taped to a power strip on/off button. This downward force turns on a fan.
8) As the blades of the fan spin, a string with a pencil attached to it is wrapped around the fan's axle.
9) When the pencil is drawn up it releases a lego car inside of a cardboard tube.
10) The car's stored gravitational potential energy is transformed into kinetic energy as it rolls down the tube.
11) Some of the car's kinetic energy is absorbed by a steel ball steadied by nails, and drops off of a ledge.
12) The steel ball lands on the umbrella's release button and opens the umbrella.
Our Close-ups: Photos
Our Close-ups: Favorite Step
Our Close-ups: Task Completion
Our Machine Explaination and Walkthrough
Our Machine Run Videos