Wheelbarrows are a compound machine. It consists of 3 simple machines. They are laver, wheel and axle, and inclined plane.A wheelbarrow is a small hand-propelled vehicle, usually with just one wheel, designed to be pushed and guided by a single person using two handles to the rear or a sail may be used to guide the ancient wheelbarrow by wind.It is designed to distribute the weight of its load between the wheel and the operator so enabling the convenient carriage of heavier and bulkier loads than would be possible were the weight carried entirely by the operator. Their use is common in the construction industry and in gardening. Typical capacity is approximately 170 litres (6 cubic feet) of material.