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Sitting in a chair



As long as I've been sitting I have never given any thought to why I do not fall down. After physics I really took time to think about it and it all made sense. There is more than just gravity playing a role, for the longest time I just assumed that was the only force acting on me, but if that were true them I would accelerate downward with nothing to stop me at 9.81m/s2. Gravity does pull me down but the chair pushes up counter acting my weight which is my mass times the force of gravity. This elates to newton's third law which states all forces come in pair of equal magnitude and opposite direction. Thanks to this I may sit in a chair with no fear of flying into the unknown because my net force acting on me is zero


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