A block just begins to slide down a rough plane when the plane is inclined at an…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

A block just begins to slide down a rough plane when the plane is inclined at an angle θ\theta to the horizontal. Which relation gives the coefficient of static friction μs\mu_s between the block and the plane? (a) μs=sin⁡θ\mu_s = \sin \theta (b) μs=cos⁡θ\mu_s = \cos \theta (c) μs=tan⁡θ\mu_s = \tan \theta (d) μs=cot⁡θ\mu_s = \cot \theta

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