What is the source of the force felt when lifting goods with our hands?

The force felt when lifting goods with our hands primarily comes from gravity. Gravity is the natural force that pulls objects toward the Earth, creating weight. When you lift an object, you must exert a force equal to or greater than the weight of the object to successfully raise it. If the weight of the item exceeds the force you apply, the object will not move upward.

In this scenario, the sensibility of the force is a result of the gravitational pull acting on the mass of the goods. It is through this interaction that you feel the weight in your hands. In practical terms, when lifting an object, the hands apply an upward force counteracting the downward gravitational force, making it essential to understand gravity’s role in the lifting process.

The other options—friction, magnetism, and air resistance—play different roles in physical interactions but do not define the primary force you consciously act against when lifting heavy items. Friction pertains to the resistance encountered when two surfaces move against each other, magnetism relates to the forces between magnets, and air resistance involves the drag force acting opposite to the direction of an object's motion through air. None of these forces directly contribute to the sensation or mechanics of lifting an object against the force of gravity.