When a block just begins to slide down a rough inclined plane

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

Problem

When a block just begins to slide down a rough inclined plane, the inclination of the plane to the horizontal is called the angle of repose θ\theta. Which one of the following relations is satisfied at this stage? (a) cos⁡θ=μs\cos \theta = \mu_s (b) tan⁡θ=μs\tan \theta = \mu_s (c) μstan⁡θ=1\mu_s \tan \theta = 1 (d) sin⁡θ=μs\sin \theta = \mu_s

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