Which model in manual handling involves the use of a rigid beam to lift or move loads?

The concept of using a rigid beam to lift or move loads is best represented by the lever model. In manual handling, levers are tools that amplify physical force to enable the lifting or moving of heavy items more easily. The basic principle involves a fulcrum (the pivot point), a load (the object being moved), and the effort (the force applied by a person). By strategically placing the fulcrum closer to the load, the effort required to lift that load is significantly reduced.

Levers play a critical role in manual handling practices by allowing individuals to lift objects with less strain on their body. This not only enhances efficiency but also reduces the risk of injury, particularly to the back and joints, which are often stressed during manual lifting tasks. By recognizing the mechanics of leverage, individuals can apply this principle to improve their manual handling techniques, making it safer and more effective.