JAMB Physics 2024 Paper

Concept:The velocity ratio of a machine compares the distance moved by the effort with the distance moved by the load.Explanation:The velocity ratio is defined as:$$VR = \frac{\text{distance moved by effort}}{\text{distance moved by load}}$$If the velocity ratio is $4$, then:$$\frac{d_E}{d_L} = 4$$This means that $d_E = 4 \times d_L$.In other words, the effort moves a distance that is $4$ times greater than the distance moved by the load.This is a statement about distances, not about forces or efficiency directly.Therefore, option B is correct.The other options describe mechanical advantage or efficiency, not velocity ratio.Answer:B. Distance moved by effort is $4$ times greater than the distance moved by load.