What will a spring scale read for the weight of a 57- k g woman in an elevator t

Question

What will a spring scale read for the weight of a 57-kg woman in an elevator that moves upward with constant speed of 5.2m/s ?

What will a spring scale read for the weight of a 57-kg woman in an elevator that moves downward with constant speed of 5.2m/s ?

What will a spring scale read for the weight of a 57-kg woman in an elevator that moves upward with acceleration of 0.28 g?

What will a spring scale read for the weight of a 57-kg woman in an elevator that moves downward with acceleration of 0.28 g ?

What will a spring scale read for the weight of a 57-kg woman in an elevator that moves in free fall?               

Explanation / Answer

1) W = m(g+a) = 855 N
2) W = m(g-a) = 262.2 N
3) W = m(g+0.28*g) = 715 N
4) W = m(g - 0.28*g) = 402.192 N
5) zero

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