A) 12
B) 60
C) 112
D) 6
Correct Answer: A
Solution :
By conservation of angular momentum mvr = constant \[{{v}_{\min }}\times {{r}_{\max }}={{v}_{\max }}\times {{r}_{\min }}\] \\[{{v}_{\min }}=\frac{60\times 1.6\times {{10}^{12}}}{8\times {{10}^{12}}}=\frac{60}{5}=12\,m/s\]You need to login to perform this action.
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