The Total Force Needed to Drag a Box at Constant

question 2

Multiple Choice

The total force needed to drag a box at constant speed across a surface with coefficient of kinetic friction μ_k is least when the force is applied at an angle θ such that

• A) sinθ = μ_k.
• B) cosθ = μ_k.
• C) tanθ = μ_k.
• D) cotθ = μ_k.
• E) secθ = μ_k.

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