A) \[2\sqrt{\mu rg}\]
B) \[3\sqrt{\mu rg}\]
C) \[\sqrt{2\mu rg}\]
D) \[\sqrt{\mu rg}\]
Correct Answer: D
Solution :
When a vehicle takes a turn on a circular path it requires centripetal force. If friction provides this centripetal force then vehicle can move in circular path safely, if Friction force \[\ge \] Required centripetal force \[\mu mg\ge \frac{m{{v}^{2}}}{r}\] \[{{v}_{safe}}\ge \sqrt{\mu rg}\]
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