A) \[8\text{ }rad\text{ }{{s}^{-2}}\]
B) \[4\text{ }rad\text{ }{{s}^{-2}}\]
C) \[\text{16 }rad\text{ }{{s}^{-2}}\]
D) \[\text{12 }rad\text{ }{{s}^{-2}}\]
E) \[\text{10 }rad\text{ }{{s}^{-2}}\]
Correct Answer: A
Solution :
\[\omega ={{\omega }_{0}}+\alpha t\] \[\Rightarrow \] \[\frac{200}{5}=0+\alpha \times 5\] \[\Rightarrow \] \[\alpha =\frac{200}{25}=8\,rad/{{s}^{2}}\]
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