A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 835
N. As the elevator moves up, the scale reading increases to 938 N, then decreases back to 835 N. The acceleration of gravity is 9.8 m/s 2 . Find the acceleration of the elevator. Answer in units of m/s 2
As the elevator approaches 74th floor the scale reading drops as low as 777 N. What is the acceleration of the elevator? Answer in units of m/s 2 .