Please, Read the Question Below :)

Question

A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 594 N. As the elevator later stops, the scale reading is 386 N. Assume the magnitude of the acceleration is the same during starting and stopping.

(a) Determine the weight of the person. ________N

(b) Determine the person's mass. _________kg

(c) Determine the magnitude of acceleration of the elevator. _____________m/s^2

Answer 1

F₁- mg = ma

mg - F₂ = ma

F₁ + F₂ = 2mg;

m = (594N + 386N)/9.8m/s² = 100 kg

mg = 100kg·9.8m/s² = 980 N

a = F₁/m - g = 594N/100kg - 9.8m/s² = - 3.86 m/s².

Answer 2

weight is the middle of the two weights = (594+386)/2. because W + Fw = 594 and W - Fw = 386.

Weight = m*9.8

find Fw and divide by m