A) \[4\pi \,rad/{{s}^{2}}\]
B) \[4{{\pi }^{2}}\,rad/{{s}^{2}}\]
C) \[2\pi \,rad/{{s}^{2}}\]
D) \[\pi /2\,\,rad/{{s}^{2}}\]
Correct Answer: A
Solution :
The frequency of flywheel = 120 rot/min = 2 rot/s Angular velocity, \[\omega =2\pi n\] \[=2\pi \times 2\] \[=4\pi rad/s\]
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