A) \[63V,\,\,1\Omega \]
B) \[61V,\,\,1\Omega \]
C) \[64V,\,\,2\Omega \]
D) \[15min\]
Correct Answer: C
Solution :
A motor cyclist provides himself, the necessary centripetal force by leaning inward on a horizontal track, which going round a curve. For a safe turn cyclist should bend through an angle \[\theta ={{\tan }^{-1}}\left[ \frac{{{v}^{2}}}{2g} \right]\] \[={{\tan }^{-1}}\left[ \frac{{{(20)}^{2}}}{40\times 10} \right]\] \[={{\tan }^{-1}}(1)\left[ \frac{{{(20)}^{2}}}{240\times 10} \right]\] \[={{\tan }^{-1}}(1)={{45}^{o}}\]
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