You stand on a scale in an elevator, and your mass is 80 kg. The only forces acting in this situation are gravity and t

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You stand on a scale in an elevator, and your mass is 80 kg.
The only forces acting in this situation are gravity and
the normal force between your feet and the scale. Explain all
parts clearly.
a. Draw the free-body diagram.
b. Initially, the elevator is at rest, so that the acceleration is
zero. What weight does the scale
read?
c. The elevator begins accelerating upward at 0.7 m/s^2. What
does the scale read?
d. The elevator accelerates downward at 0.7 m/s^2. What does
the scale read?
e. Comment on the answers to parts b, c, and d. Do these
numbers make sense? Why/not?