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Unformatted text preview: Vector has magnitude 3.7 units; vector has magnitude 5.9 units. The angle between and is 45 . What is the magnitude of + ? Woman who weighs 620 N sits on a chair with her feet on the floor and her arms resting on the chair's armrests. The chair weighs 105 N. Each armrest exerts an upward force of 25 N on her arms. The seat of the chair exerts an upward force of 490 N. (a) What force does the floor exert on her feet? b) What force does the floor exert on the chair? c) Consider the woman and the chair to be a single system. How much is the sum of the external forces? 1. 600 N 2. 100 N 3. 0 4. 1100 N 5. 500 N Margie who weighs 432.7 N, is standing on a bathroom scale that weighs 44.1 N. (a)With what force does the scale push up on Margie? (b)With what force does the Earth push up on the scale?...
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