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An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 90 Newton when the elevator is standing still.
(a) Determine the reading when the elevator is moving upward with a constant speed of 8.5 m/s?
N (b) Determine the reading when the elevator is moving upward with a speed of 8.5 m/s while decelerating at a rate of 1.0 m/s2?
N
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