Bungee Drop

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Cow A Bungee redirects here. For Egg Drop events, see Naked Egg Drop and Rotor Egg Drop.

Bungee Drop is a Division C event for the 2014 season. The object is to drop a mass from a given height and get it as close to the ground without touching it. The heights for the two drops can be anywhere from two to five meters (Regionals/States) or ten meters (Nationals), either the same heights or two different heights (at Regional/States this is optional, at National they will be different heights). At the impound, not only will the heights be announced, but also the weights that will be placed in the bottle for each of the drops. These weights will be anywhere from 50 to 300 grams. The goal, as before, is to get your device to drop as close as possible to the floor below, without touching. The team with the lowest score for the sum of the two drops from the ground, wins. Tiering: You get 2 drops. If you hit on one, you get put in Tier 2, ranked behind all teams that didn't hit the ground on either drop. If you hit on both drops, you get put in Tier 3, ranked behind all teams that didn't hit the ground on either drop or one drop only.

General Advice

Read the event description carefully, especially the part about the new definition of 'elasticity' for your bungee device. All sorts of materials can be used, from metal springs to Slinkys to elastic or rubber bands. With the new rules for elasticity, you don't have to make anything but the bottom two meters of the device stretchy, if you so choose.

The important task to be done is calibration. Once you have a set up with some kind of a bungee device, a soda bottle, and hopefully a clamp to attach the bungee to something at the top, you are ready to begin testing. Calibration this year promises to be more complicated than it has been in past years. If, say, you start calibration with 3.00 meters, you can't only find one mark to make on our bungee for that height - you must make a mark for that height with 25 grams, for that height with 50 grams, etc. Getting the same degree of precision as was possible in past years will now, theoretically, take square the time (assuming you calibrate for, say 15 heights, and 15 masses). Of course, the real solution will to be to find a pattern; a formula. With this rule we hopefully can find, we will be able to simply calculate where to hold the bungee at, given a height and a weight. This formula will obviously differ from device to device.

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