A Box Slides Up an Incline with an Angle of Elevation

question 28

Multiple Choice

A box slides up an incline with an angle of elevation θ.When the box reaches its maximum distance up the incline it stops and does not slide down the incline due to friction.What is the minimum value of the coefficient of static friction for this to occur?

• A)μ_s = tanθ
• B)μ_s = sinθ
• C)μ_s = cosθ
• D)μ_s = 1

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