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Can a force have a magnitude of zero?
Or does it need a magnitude to be a force? IE: could just a direction and magnitude of zero be a force?
1 Answer
- Mike TLv 71 decade agoFavorite Answer
When you are standing upright, there are two forces acting on your head. Gravity is a force directed downward. Your muscles and skeleton are a force directed upward. The force acting on your head is the sum of the two forces. If a force has a non-zero magnitude, it will cause acceleration. Is your head accelerating? Probably not. Therefore, I conclude that a force can have a zero magnitude.
