Question: A man is standing on a scale inside an elevator. As the elevator starts to go up with an acceleration a, the scale reads 839

A man is standing on a scale inside an elevator. As the elevator starts to go up with an acceleration a, the scale reads 839 N. The mass of the man is m = 70 kg. (a) Which of the free body diagrams below displays all the forces acting on the man with the correct relative magnitudes and directions? N N N ma w W W O O O N w O (b) Determine the acceleration of the elevator in m/s2. m/s2

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