Question: A (5.0-mathrm{kg}) red book is suspended from a spring attached to the ceiling of an elevator that is accelerating downward. Attaching the book causes the

A $5.0-\mathrm{kg}$ red book is suspended from a spring attached to the ceiling of an elevator that is accelerating downward. Attaching the book causes the spring to stretch $71 \mathrm{~mm}$ beyond its relaxed length. You also have a yellow book of unknown inertia. When you attach the yellow book and the red one to the spring at the same time, the spring stretches $110 \mathrm{~mm}$ beyond its relaxed length, When the elevator is at rest, the combination of the two books stretches the spring $140 \mathrm{~mm}$ beyond its relaxed length.

(a) What is the spring constant?

(b) What is the inertia of the yellow book?

(c) What is the elevator's acceleration?

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Lets denote the following variables mr as the mass of the red book 50 kg my as the mass of the yellow book unknown well solve for it k as the spring c... View full answer

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