A) 3
B) 3.3
C) 0.27
D) 0.33
Correct Answer: C
Solution :
Retardation\[=g(\sin {{60}^{o}}+\mu \cos {{60}^{o}})\] \[=10\left( \frac{\sqrt{3}}{2}+\frac{\mu }{2} \right)\] \[=5(\sqrt{3}+\mu )\] From \[v=u-at\] \[0=20-5(\sqrt{3}+\mu )\times 2\] \[(\sqrt{3}+\mu )=2\] \[\mu =2-\sqrt{3}\] \[=2-1.732=0.27\]You need to login to perform this action.
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