Physics

Problem

While an elevator descends with an acceleration of

4\,\text{m}\,\text{s}^{-2}

, a

70\,\text{kg}

person stands on a weighing machine. Using

g = 9.8\,\text{m}\,\text{s}^{-2}

, what is the approximate reading of the machine? a)

700\,\text{N}

420\,\text{N}

410\,\text{N}

280\,\text{N}