distingush between contact force and non contact force
Answers
Answer:
A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.
Explanation:
Q.3 What is meant by the term contact force? Give two examples.
Contact force is defined as the force between any two objects or a surface and an object that are in touch with each other. A contact force can be continuous or momentary. The continuous contact force is also called continuous force whereas the momentary contact force is known as the impulse force. Forces that belong in this category are friction, air resistance, normal force, applied force, tension force, and spring force. Pushing a car or kicking a ball or pushing a desk across a room are some of the everyday examples where contact forces are at work.
Q.4 What is meant by non- contact force? Give two examples.
Non Contact force is a force at a distance. Forces acting on anybody without any physical contact between them. Forces belonging to this category are: Gravitational force, Magnetic force, Electrical force, Nuclear force etc.
There are various examples for non contact forces we visualize in our daily life. Some of them are: (a) Apple falls down from tree gives non contact force viz. gravity. (b) Iron pins at vicinity of a magnet get attracts without any physical contact.