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    NCHSphysics Posts: 1, Reputation: 1
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    Oct 15, 2009, 04:49 PM
    What is the magnitude of the force of gravity acting on an object called?
    I need to know before tomorrow
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    Oct 16, 2009, 06:54 AM

    The magnitude of the force of gravity acting on an object is called its... weight! Your weight is equal to your mass times the local value of acceleration due to gravity, which on the surface of the earth we call "g" and has an approximate value of 9.8 m/s^2. Thus your weight on the earth's surface is calculated from:

    W = m*g

    Example: if your mass is 100Kg, then your weight on Earth measured in Newtons is:

    W = 100 kg * 9.8 m/s^2 = 980 N.
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