A) 28.16 rad/sec
B) 19.28 rad/sec
C) 8.12 rad/sec
D) 35.26 rad/sec
Correct Answer: A
Solution :
conservation of angular momentum \[\operatorname{m}{{\omega }_{1}}{{\operatorname{r}}_{1}}^{2}=\operatorname{m}{{\omega }_{2}}{{\operatorname{r}}_{2}}^{2}\] \[2\times 44\times 0.8\times 0.8=2\times {{\omega }_{2}}\times 1\times 1\] \[{{\omega }_{2}}=28.16\,\,\operatorname{red}/sec\]
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