A) 5367 rpm
B) 6000 rpm
C) 9360 rpm
D) 12,000 rpm
Correct Answer: A
Solution :
\[\frac{1}{f_{n}^{2}}=\frac{1}{f_{1}^{2}}+\frac{1}{f_{2}^{2}}\] \[\frac{1}{{{100}^{2}}}+\frac{1}{{{200}^{2}}}=\frac{5}{{{200}^{2}}}\] \[f_{n}^{2}=\frac{{{200}^{2}}}{5},\] \[{{f}_{n}}=5367\,\,rpm\]You need to login to perform this action.
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