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Physics has to do with simple machines please help!

  1. Apr 1, 2009 #1
    1. The problem statement, all variables and given/known data

    1.) What are the five uses of simple machines?

    2.) A bicycle is a combination of simple machines. What are at least three things that can be done to increase the efficiency of a bicycle?

    3.) Give an example of a device that is a lever that increases force, but does not change direction of the force?

    4.) Give an example of a device that is a wheel and axle
    a,) that increases the output speed
    b.) that increases the output force
    5.) In using a screwdriver, what is the advantage of using one that has a really fat handle?

    6.) In using a screwdriver, what is the disadvantage of using one that has a really fat handle?
     
  2. jcsd
  3. Apr 1, 2009 #2

    mgb_phys

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    You have to make an attempt at answering the questions and we can help
     
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