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You walk into an elevator, step onto a scale, and push the “up” button. You also recall that your normal weight is 625 N. Start answering each of the following questions by drawing a free- body diagram.
(a) If the elevator has an acceleration of magnitude 2.50 m/s2, what does the scale read?
(b) If you start holding a 3.85-kg package by a light vertical string, what will be the tension in this string once the elevator begins accelerating?