The force that a spring applies on an object is an example of a field force. Field forces are forces that act at a distance, meaning they do not require physical contact between objects to exert their influence. In the case of a spring, when you compress or stretch it, the force it exerts can act on an object without direct contact. This force is an example of a field force because it operates through a field or a region in space where the force can be felt without the need for physical contact.
Another example of a field force is the electric force. Similar to the force exerted by a spring, the electric force can act on objects without direct contact, such as the attraction or repulsion between charged particles.
In contrast, a physical push on an object and friction are not examples of field forces. A physical push involves direct contact between objects, while friction is a contact force that opposes motion between surfaces in contact.
To summarize:
1. Field forces act at a distance without physical contact.
2. Examples of field forces include the force exerted by a spring and the electric force.
3. Physical push and friction are not considered field forces as they involve direct contact between objects.
