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Old 04-19-2006, 05:59 PM
Jimmy, but not really Jimmy, but not really is offline
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Question im having a little science project problem

i need some ideas on a project for science. It needs to be a compound machine made out of at least three simple machines, and it needs to complete a simple every-day task. Does anyone have any ideas on what i should do? please help!
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Old 04-20-2006, 10:18 AM
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You're talking about a Rube Goldberg machine?

Well, first of all, you have to investigate the simple machines. Work consists of two components: distance and energy. I don't know how to phrase it in a better way, but carrying a 10 lb box for 1 mile vs. carrying a 5 lb box for 2 miles. So these are the two components of work. A simple machine does not change the amount of work, but changes the ratio between these two. For example, a ramp up into a truck increases the distance, but decreases the energy needed to go through the distance. I suggest you look at the functions of each simple machine, like a ramp, a pulley, a lever, etc. Then plan to use at least three of these. Then look at the tools you have, look around the house, and choose something you'd like to perform. Good luck!
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