How a wheelbarrow is a compound machine?

A wheelbarrow is considered a compound machine because it combines multiple simple machines to facilitate lifting and moving heavy loads. It features a lever in the form of the handles, which help lift the load, and a wheel and axle that reduce friction and make it easier to transport the load. Additionally, the bucket of the wheelbarrow acts as a container that allows for efficient carrying of materials. Together, these components work in unison to enhance mechanical advantage and efficiency.