# physics

A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 840 N. As the elevator moves up, the scale reading increases to 943 N, then decreases back to 840 N.
The acceleration of gravity is 9.8 m/s^2.
Find the acceleration of the elevator.
Answer in units m/s^2.

As the elevator approaches 74th floor the scale reading drops as low as 790 N.
What is the acceleration of the elevator?
Answer in units of m/s^2

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