New How to build a windmill water is good work for the science project?

Nicholas A Question : How to build a windmill water is good for science projects worked in the building of a windmill water? also worked for a science project. Its basically a mini-windmill, that power with a weight of 500 g up and down after it is fully available, at least 10 times, effectively. Any ideas / sites to show me how to do Sorry, the weight is 0.5 N Best Answer:

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