Final answer:
When elevators can't be used to move equipment, the work needed by the workers must be established. By considering the paths for moving the equipment and calculating the work done against friction, the most efficient method can be determined.
Step-by-step explanation:
Physics: Work Done in Moving Equipment
When elevators cannot be used to move equipment, an alternative method needs to be established. To determine the work needed, we can consider the paths shown from A to E. Let's calculate the work required for each path.
Path A to E:
- Using the elevator first then sliding on the third floor: We need to consider the work done against friction on the ground floor, which can be calculated as (force of friction) * (distance). Then, we also need to consider the work done against friction on the third floor, calculated as (force of friction) * (distance).
- Sliding to location C and using the elevator to the third floor, then sliding: We need to determine the work done against friction on the ground floor, which is the same as in the first path. Then, considering the work done against friction on the third floor, we can calculate it as (force of friction on third floor) * (shorter distance).
By comparing the work required for each path, we can establish the most efficient method to move the equipment when elevators are unavailable.