JAMB Physics 2018 Objective — Question 2
Question 2 of 38 from the Joint Admissions and Matriculation Board (JAMB) Physics 2018 Objective paper, with the correct answer and a full explanation.
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A string is attached to a nail on the floor. A force of 20N is exerted on the nail at an angle of 30° with the horizontal. The force tending to bend the nail over is
- A. 20N
- B. 17.32NCorrect
- C. 5.77N
- D. 4.22N
Explanation
The horizontal component (which tends to bend the nail) = F cos30° = 20×0.866 ≈ 17.32N.
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