Compare the sizes and directions of the arrows in each picture representing forces acting on the person. Which of the following force diagrams shows that the forces acting on an object are balanced?
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A four quadrant layout. In the first quadrant, A, is a girl balancing on her hands, a red arrow is pointing up and is the same length as an arrow pointing down. In quadrant B is the same girl balancing on her hands. A red arrow is pointing up, which is smaller than the arrow that is pointing down. Quadrant C is the same girl balancing on her hands. A red arrow pointing down is smaller than the arrow pointing up. In Quadrant D is the same girl balancing on her hands. There are two red arrows that are pointing up that are the same size.