WAEC Physics 2020 Objective — Question 6
Question 6 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.
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Which of the following machines does not apply the lever principle?
- A. Claw hammer
- B. Wheel barrow
- C. Single pulleyCorrect
- D. Sugar tong
Explanation
A single pulley is a device consisting of a wheel on an axle or shaft over which a cord is looped in order to change the direction of force or load at the other end; it does not apply the lever principle. Claw hammer is a first class lever, wheel barrow is a second class lever, and sugar tongs use the third class lever principle.
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