JAMB Physics 2023 Objective — Question 28
Question 28 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2023 Objective paper, with the correct answer and a full explanation.
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Wheel radius 30 cm, axle radius 6 cm. Effort to lift 120 N load (100% efficiency):
- A. 124 N
- B. 40 N
- C. 24 NCorrect
- D. 20 N
Explanation
MA=R/r=30/6=5; Effort=120/5=24 N.
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