Formula for force

[kizersi5]

hello I would like to know the formula for force?

 

[lightgrav]

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, ...

 

[kizersi5]

Need help!

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

 

[mukundpa]

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