1. As shown in Fig. 1, a solid rod is hanged by a wire attached to its right. The left of the rod contacts the wall with force of friction. If the coefficient of static friction is μ_s, what is the maximum value of θ that the rod can keep stable?
(A) θ = tan⁻¹ μ_s
(B) θ = cot⁻¹ μ_s
(C) θ = sin⁻¹ μ_s
(D) θ = cos⁻¹ μ_s
(E) θ = sec⁻¹ μ_s
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統計: 尚無統計資料
統計: 尚無統計資料