Physics

Physics

Problem

Which of the following relationships correctly gives the coefficient of static friction μs\mu_s in terms of the critical angle θc\theta_c at which a block just begins to slide down a rough inclined plane? a) μs=sin⁡θc cos⁡θc\mu_s=\sin\theta_c\,\cos\theta_c b) μs=cot⁡θc\mu_s=\cot\theta_c c) μs=tan⁡θc\mu_s=\tan\theta_c d) μs=sin⁡θc\mu_s=\sin\theta_c

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