1. Sep 25, 2005 #1

   kizersi5

   

   hello I would like to know the formula for force?

    

   kizersi5, Sep 25, 2005
2. 
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3. Sep 25, 2005 #2

   lightgrav

   

   Homework Helper

   What kind of Force? The cause of a Force :
   Force by a spring, Force by gravity, Force by electricity,
   Force by Pressure, friction Force, air resistance Force,
   Force by magnetism, Nuclear Forces ...
   
   What purpose of Force? Effects of a Force :
   momentum change, acceleration, Work, compression, ...

    

   lightgrav, Sep 25, 2005
4. Sep 26, 2005 #3

   kizersi5

   

   Need help!
   
   i would like to know the formula for the force of gravity?

    

   kizersi5, Sep 26, 2005
5. Sep 27, 2005 #4

   mukundpa

   

   Homework Helper

   F = mg = GMm/r where M is mass of earth and r is distance from the center of earth.

    

   mukundpa, Sep 27, 2005

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