Final answer:
The book with less mass will have less potential energy due to its weight.
Step-by-step explanation:
In physics, potential energy (PE) is the energy an object possesses due to its position or condition. The amount of potential energy an object has depends on its height and mass.
In this case, if one book weighs less than the other, the book with less mass will have less potential energy. This is because potential energy is directly proportional to mass. Therefore, the book with less mass will have less potential energy.
For example, if we have two books, one weighing 2 kg and the other weighing 5 kg, and they are placed at the same height, the book weighing 2 kg will have less potential energy compared to the book weighing 5 kg.