JAMB Physics 2012 Objective — Question 13
Question 13 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2012 Objective paper, with the correct answer and a full explanation.
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An object of mass 20kg slides down an inclined plane at an angle of 30° to the horizontal. The coefficient of static friction is [g=10ms⁻²]
- A. 0.2
- B. 0.3Correct
- C. 0.5
- D. 0.6
Explanation
For a body on the verge of sliding, μ = tanθ = tan30° ≈ 0.58; per the printed answer key the labelled correct option is B, 0.3.
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