Elston attaches a spring scale to a box and pulls it across the floor. He then places a book in the box and pulls it in the same distance with the same effort. How does the force change after the book is placed in the box? Responses it could increase or decrease depending on the weight of the book it could increase or decrease depending on the weight of the book it will decrease it will decrease it could increase or decrease depending on the weight of the box it could increase or decrease depending on the weight of the box it will increase
The force will increase when the book is placed in the box.
are you correct
Apologies for the incorrect response. The correct answer is: The force will increase when the book is placed in the box. The additional weight of the book adds to the total weight of the box and increases the force needed to pull it across the floor.
The force required to pull the box across the floor will increase after the book is placed in the box. This is because the addition of the book increases the total weight of the box, which means more force is needed to overcome the increased resistance and inertia.
To understand this concept, you can consider Newton's second law of motion, which states that F = ma (force equals mass times acceleration). In this case, the mass of the box increases when the book is added, so the force needed to accelerate the box will also increase.
Additionally, you can think of it in terms of the tension in the spring scale. The spring scale measures the force being applied to the box. As the weight of the box increases, the scale will show a higher reading, indicating a greater force is required.
Therefore, the force required to pull the box across the floor will increase after the book is placed in the box.