(Solved): A 75-kg man stands on a spring scale in an elevator. During the first 3 seconds of motion from rest ...

A 75-kg man stands on a spring scale in an elevator. During the first 3 seconds of motion from rest, the tension \( T \) in the hoisting cable is 8300 N . Find the reading \( R \) of the scale in newtons during this interval and the upward velocity \( v \) of the elevator at the end of the 3 seconds. The total mass of the elevator, man, and scale is 750 kg .