Giulio's bag of marbles is twice as heavy as Jim's. If it takes 5 extra marbles to make Jim's bag feel heavier, it will take 10 extra marbles to make Giulio's bag feel heavier. This best illustrates

Question

Quizplus · Accepted Answer

This scenario demonstrates Weber's law, which states that the just-noticeable difference between two stimuli is a constant proportion of the original stimulus. In this case, the proportion between the amount of extra marbles needed to make Jim's bag feel heavier versus Giulio's bag feel heavier is the same, indicating that the weight difference between their bags is constant proportionally.

Giulio's Bag of Marbles Is Twice as Heavy as Jim's