Final answer:
A wheelbarrow is an example of a second class lever, not a first class lever, because the load is between the fulcrum (wheel's axle) and the input force, making the statement false.
Step-by-step explanation:
The statement that a wheelbarrow is a good example of a first class lever is false. A first class lever is characterized by the fulcrum being positioned between the input force (effort) and the output force (load). In a wheelbarrow, the fulcrum, which is the wheel's axle, is located at one end of the lever, while the output force or load is situated between the fulcrum and the input force.
This setup describes a second class lever where the load comes between the fulcrum and the effort, therefore allowing you to lift heavier loads than you could with your body alone. The mechanical advantage (MA) of a wheelbarrow is calculated by dividing the distance from the input force to the fulcrum by the distance from the output force to the fulcrum. This advantage allows for easier transportation of heavy loads over a distance.