are the propellers of a windmill an example of a screw (a simple machine)?

Subject: are the propellers of a windmill an example of a screw (a simple machine)?

Date: Thu Apr 2 16:26:49 1998
Posted by marketie papantonis
Grade level: 10-12
School: archbishop ryan high school
City: philadelphia State/Province: pennsylvania
Country: united states of america
Area of science: Physics
ID: 891556009.Ph

Message:


i am doing a project on simple machines. i looked in the encarta 98 encyclopedia 
under screw. then it linked me to propellers of a wind mill. am i right or just 
really confused?

Re: are the propellers of a windmill an example of a screw (a simple machine)?

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