Answer:
443.88 N
Explanation:
When an elevator is moving downward, the apparent weight of a person inside an elevator is given as,
R = m(g-a) .............................. Equation 1.
Where R = Apparent weight of the person inside the elevator, m = mass of the person, g = acceleration due to gravity, a = acceleration.
Recall,
W = mg................................ Equation 2
m = W/g................................ Equation 3
Where W = weight of the person
Substitute the value of m into equation 1
R = W-Wa/g......................... Equation 4
Given: W = 580 N, a = 2.3 m/s², g = 9.8 m/s².
Substitute into equation 4
R = 580-580(2.3/9.8)
R = 580-136.12
R = 443.88 N.
Hence she will she 443.88 N as the scale reading.
