A) 3 m/s
B) 5 m/s
C) 9m/s
D) 14 m/s
Correct Answer: D
Solution :
Centrifugal force in the string is given by \[F=\frac{m{{v}^{2}}}{r}\] \[{{v}^{2}}=\frac{Fr}{m}\] \[{{v}^{2}}=\frac{25\times 1.96}{0.25}=196\] \[v=\sqrt{196}=14\,m/s\]You need to login to perform this action.
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