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Homework Help: Weight of body and it's mass

  1. May 14, 2010 #1
    is the weight of the body the same as its mass?is the weight of the body constant at all places in the earth?is the mass?

    plss help me to answer this question....
     
  2. jcsd
  3. May 14, 2010 #2

    D H

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    Re: weight....

    It depends on what you mean by "weight". There are several meanings to this term.

    This looks like homework. What do you think?
     
  4. May 14, 2010 #3
    Re: weight....

    Usually weight is defined as mass times gravity. So they are not the same thing. As for on the Earth the weight would change a little bit. But not enough for you to really feel. I think the gravity is stronger around the equator than the poles, or it could be the other way around, I forget. But I'm pretty sure it does change but but small amounts. As for mass, an objects mass will never change unless you remove parts from it. An object will have the same mass on the earth as the moon and so on.
     
  5. May 14, 2010 #4
    Re: weight....

    Your mass can change if you change your kinetic energy and even stranger if you change your potential energy. Since mass is equal to your total energy. So you could say that if you are at a different location on the earth your potential energy has changed slightly and so your mass is now slightly different, even with the same kinetic energy....
     
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