A) \[850\text{ }cm/{{s}^{2}}\]
B) \[996\text{ }cm/se{{c}^{2}}\]
C) \[720\text{ }cm/{{s}^{2}}\]
D) \[650\text{ }cm/se{{c}^{2}}\]
Correct Answer: B
Solution :
Time period \[=\frac{No.\text{ }of\text{ }revolutions}{time}=\frac{25}{14}=1.79\,\sec \] Now angular speed \[\omega =\frac{2\pi }{T}=\frac{2\times 3.14}{1.79}=3.51\,rad/\sec \] Now magnitude of acceleration is given by \[a={{\omega }^{2}}I={{(3.51)}^{2}}\times 80\] \[=985.6\text{ }cm/se{{c}^{2}}\] \[\approx 996\text{ }cm/se{{c}^{2}}\]
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