A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.790 of the person's regular weight.
1) Calculate the acceleration of the elevator
2) Find the direction of the acceleration
Positive y-axis points UP.
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This solution is provided in 277 words and is attached in both a .doc and .pdf file. It uses diagrams and equations to find the answer, including a discussion of fictitious force.