WAEC Physics 2017 Objective — Question 6
Question 6 of 50 from the West African Examinations Council (WAEC) Physics 2017 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about static friction is correct? It
- A. A. is independent of the nature of surfaces in contact
- B. B. depends on the area of surfaces in contact
- C. C. depends on the relative motion between the surfaces in contact
- D. D. depends on the weight of the moving bodyCorrect
Explanation
Static friction depends on the weight of the body. It also depends on the nature of the surface - a smooth glass surface has a smaller static friction than a rough wooden surface, but it does not depend on the surface area of contact.
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