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    Buckeye81's Avatar
    Buckeye81 Posts: 2, Reputation: 1
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    #1

    Sep 21, 2009, 10:08 AM
    acceleration Vs. gravity
    Would expect the value of acceleration (the slope) for the free falling dropped mass to be higher or lower than the acceleration due to gravity. Why? I thought lower because there was drag on the ticker tape in our experiement. Am I on the correct path??
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Sep 21, 2009, 10:25 AM

    If it's free-falling, the only force acting on it is the force due to gravity. Therefore, the acceleration will be exactly the acceleration due to gravity.

    If it's falling through air, then there is an upward force on the mass due to the friction caused by the body with the air. When you try to calculate this, it enters the calculation as an additional upward frictional force rather than an acceleration (Did that make sense? Probably not.).
    Buckeye81's Avatar
    Buckeye81 Posts: 2, Reputation: 1
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    #3

    Sep 21, 2009, 10:36 AM
    Quote Originally Posted by Perito View Post
    If it's free-falling, the only force acting on it is the force due to gravity. Therefore, the acceleration will be exactly the acceleration due to gravity.

    If it's falling through air, then there is an upward force on the mass due to the friction caused by the body with the air. When you try to calculate this, it enters the calculation as an additional upward frictional force rather than an acceleration (Did that make sense? Probably not.).
    Thank-you Perito for your help
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