A weight attached to a spring starts at rest. Let $d$ be the displacement, in centimeters, from the weight's rest position. We raise the spring $21 \mathrm{~cm}$ above its rest position and release it at time $t=0$, where $t$ is in seconds. The weight bobs up and down once every second for a few seconds. The amplitude of the spring's motion shrinks $b$ half every second. Give a model for the spring's motion.

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The Answer of A weight attached to a spring starts at rest. Let $d$ be the displacement, in centimeters, from the weight's rest position. We raise the spring $21 \mathrm{~cm}$ above its rest position and release it at time $t=0$, where $t$ is in seconds. The weight bobs up and down once every second for a few seconds. The amplitude of the spring's motion shrinks $b$ half every second. Give a model for the spring's motion.

A Weight Attached to a Spring Starts at Rest ddd Be the Displacement, in Centimeters, from the Weight's Rest Position

A Weight Attached to a Spring Starts at Rest $d$ Be the Displacement, in Centimeters, from the Weight's Rest Position