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    KaeCiiii's Avatar
    KaeCiiii Posts: 1, Reputation: 1
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    #1

    Apr 5, 2009, 06:00 PM
    Work done by gravity
    What is the equation for work done by gravity for an object dropped to the ground?
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Apr 5, 2009, 08:12 PM

    Work = MGH where

    M is the mass
    G is the acceleration due to gravity
    H is the height
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Apr 7, 2009, 12:54 AM

    If you didn't know that formula, you can go from the basic formula;

    Work = Force x distance

    What is force? Force is mass x acceleration.

    Therefore, work = mass x acceleration x distance

    where the mass is the mass of the object, acceleration is the acceleration due to gravity and distance is the height from which the object was dropped.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Apr 8, 2009, 01:55 AM

    Yes, helpinhere, it's just that we can never be sure at what level of education the OP is. I prefer mention acceleration due to gravity since early classes use 10m/s^2 for the sake of simplicity and later 9.8m/s^2. Thanks for the greenie both of you! :)
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