Understanding the Concepts

* Work: Work is done when a force causes an object to move a certain distance. It's calculated as:

* Work (W) = Force (F) x Distance (d)

* Levers: Levers help us amplify force. While they make it easier to lift heavy objects, the total work done remains the same.

Calculations

1. Identify the force and distance:

* Force (F): 4500 N (the weight of the box)

* Distance (d): 3.5 meters (the height the box is raised)

2. Calculate the work:

* Work (W) = 4500 N * 3.5 m = 15750 Joules (J)

Answer: 15,750 Joules of work were done to raise the box.