Question

A 73kg person stands on a scale in an elevator.

- What does the scale read (in N) when the elevator is accelerating upward at 2.8 m/s2 ?
- What does the scale read (in N) when the elevator is accelerating downward at 2.8 m/s2 ?
up ... 73 * (9.8 + 2.8) ... N

down ... 73 * (9.8 - 2.8) ... N

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