BECE Science 2019 Paper

Concept:A crowbar acts as a lever, and its mechanical advantage depends on the effort distance and load distance from the fulcrum.Explanation:The mechanical advantage of a lever is given by:$$\text{Mechanical Advantage} = \frac{\text{effort distance}}{\text{load distance}}$$A larger effort distance than load distance gives a mechanical advantage greater than 1.This means the applied effort is less than the load, making the heavy load easier to move.Answer:B. effort distance is longer than the load distance.