A man stand still on a level floor.What forces act on him? Draw a free body diagram (FBD) to show all forces acting on him?
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Solution
If a man is standing still on the level floor the FBD of the man would have only two forces acting on the man , the forces are Weight of the man and the Normal reaction force of the man. The arrows pointing upwards are the normal force whereas the arrows pointing downwards are representing weight.