In a Z-rig system, what role do the two pulleys play?

In a Z-rig system, the two pulleys serve a crucial role in facilitating the pulling process. This system is commonly used in rescue operations to create a mechanical advantage, making it easier to lift or move a load. By incorporating pulleys, the configuration effectively redistributes the force applied when pulling, allowing a team to exert less effort to achieve the desired movement of the load.

The pulleys help in redirecting the tension in the rope, allowing for smoother operation and reducing the amount of force that needs to be exerted compared to lifting the load directly. This mechanical advantage is key in rescue scenarios where manpower may be limited or where the load is particularly heavy.

In summary, the primary function of the pulleys in a Z-rig system is to enhance the efficiency of the pulling operation, making it safer and more manageable for rescuers.