Final answer:
The object in question is a wheelbarrow, which differs from a barbell or medicine ball as its center of mass is located away from the handle, affecting its stability and the application of force during lifting and moving.
Step-by-step explanation:
The item that differs from a barbell or a medicine ball in that the center of mass is away from the handle is a wheelbarrow. In physics, objects like barbells have a center of mass that coincides with the position of the handle when the mass is equally distributed on either side.
However, the distinctive design of a wheelbarrow results in the center of mass being located away from the handle. This is evident in activities such as lifting a loaded wheelbarrow; the center of mass influences the application of force and stability. With a wheelbarrow, the load is placed forward of the handles, moving the center of mass relative to the point of support provided by the user. This can greatly affect how the force is applied when lifting or moving the wheelbarrow as compared to lifting a centered load like a barbell. Additionally, when considering moments of inertia and rotation, a uniform rod or tennis racquet demonstrates varied effects dependent on where force is applied relative to the center of mass, just as with the wheelbarrow.