A person stands on a scale inside an elevator at rest

Question

A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W = 738 N.

(a) What is the person’s mass?

 kg

(b) The elevator accelerates upward momentarily at the rate of a = 3 m/s². What does the scale read then?

 N

(c) The elevator then moves with a steady speed of 6 m/s. What does the scale read now?

 N

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