Question

Lenore is on an inclined plane next to her truck. Holding her hands steady, she pushes a box up the plane and into her truck. Where can energy be lost?(1 point)
Responses

Friction between Lenore’s hands and the box.
Friction between Lenore’s hands and the box.

Friction between the truck and the inclined plane.
Friction between the truck and the inclined plane.

Friction between Lenore and the ground.
Friction between Lenore and the ground.

Friction between the box and the inclined plane.

Answer 1

Energy can be lost in various places during Lenore's action of pushing the box up the inclined plane. The options related to friction would particularly be relevant sources of energy loss. Here are the places where energy can be lost:

1. **Friction between Lenore’s hands and the box** - While this may cause slight energy loss, it is less significant compared to the other options.

2. **Friction between the truck and the inclined plane** - If there is any movement or resistance at the interface between the truck and the inclined plane, energy can be lost here.

3. **Friction between Lenore and the ground** - If Lenore's feet are not stationary or if there is any slipping involved, energy can be lost due to friction as well.

4. **Friction between the box and the inclined plane** - This is likely to be one of the most significant sources of energy loss, as the box is sliding along the surface of the inclined plane.

Among these options, the strongest sources of energy loss during this process would likely be **friction between the box and the inclined plane**, and potentially **friction between Lenore and the ground** or **friction between the truck and the inclined plane**.

Therefore, the answer highlighting the most substantial loss of energy is:

**Friction between the box and the inclined plane.**