If an object just begins to slide on a surface ... - JAMB Physics 2003 Question
If an object just begins to slide on a surface inclined at 30o to the horizontal,the coefficient of friction is
A
√3
B
√3/2
C
1/√2
D
1/√3
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Correct Option: D
When an object is on the verge of sliding on an inclined plane, the force of static friction is at its maximum value. The coefficient of static friction (µ) is related to the angle of inclination (θ) at which sliding begins by the following equation:
µ = tan(θ)
In this case, θ = 30°. Therefore:
µ = tan(30°) = 1/√3
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