12. [0/2 Points] DETAILS PREVIOUS ANSWERS OBINPHYS8 2.P.011.

MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER

A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W = 772 N.

W

(a) What is the person's mass?

327.72

x kg

(b) The elevator accelerates upward momentarily at the rate of a = 4 m/s². What does the scale read then?

4524.936

XN

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

327.72

XN

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