- #1
UrbanXrisis
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If a rotating object starts at rest and completes one rotation in 4s, what is its angular acceleration assuming its angular acceleration is constant?
[tex]\omega=\frac{2\pi}{t}[/tex]
[tex]\omega=\frac{2\pi}{4}[/tex]
[tex]\omega=\frac{\pi}{2}[/tex]
[tex]\alpha=\frac{\omega}{t}[/tex]
[tex]\alpha=\frac{\frac{\pi}{2}}{4}[/tex]
[tex]\alpha=\frac{\pi}{8}[/tex]
the book says the answer is pi/4, where did I go wrong?
[tex]\omega=\frac{2\pi}{t}[/tex]
[tex]\omega=\frac{2\pi}{4}[/tex]
[tex]\omega=\frac{\pi}{2}[/tex]
[tex]\alpha=\frac{\omega}{t}[/tex]
[tex]\alpha=\frac{\frac{\pi}{2}}{4}[/tex]
[tex]\alpha=\frac{\pi}{8}[/tex]
the book says the answer is pi/4, where did I go wrong?