## Trigonometry (11th Edition) Clone

The maximum height that the weight rises above its equilibrium position is called the amplitude. It can be found by comparing the equation $s(t)=-4\cos 10t$ to $s(t)=a\cos w t$ where $|a|$ is the amplitude. Comparing the two equations, we find that $a=-4$. Therefore, the maximum height that the weight rises above its equilibrium position (amplitude) is: $|a|=|-4|=4$ inches
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