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Non-Contact Forces and its Types (Part -2) Video Lecture | Science Class 8

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FAQs on Non-Contact Forces and its Types (Part -2) Video Lecture - Science Class 8

1. What are non-contact forces?
Ans. Non-contact forces are forces that act on an object without any physical contact between the object and the source of the force. These forces can influence an object's motion and behavior without direct contact.
2. What are the types of non-contact forces?
Ans. There are four main types of non-contact forces: gravitational force, electromagnetic force, nuclear force, and frictional force. These forces can act over a distance and do not require direct contact between objects.
3. How does gravitational force work as a non-contact force?
Ans. Gravitational force is a non-contact force that attracts objects towards each other. It is responsible for the weight of objects and the motion of celestial bodies. It acts between any two objects with mass, pulling them towards each other.
4. What is electromagnetic force and how does it work as a non-contact force?
Ans. Electromagnetic force is a non-contact force that acts between charged particles. It includes both electric and magnetic forces. This force is responsible for the interactions between charged objects, such as the attraction or repulsion of magnets and the flow of electric current.
5. How does frictional force work as a non-contact force?
Ans. Frictional force is a non-contact force that opposes the motion of an object when it comes into contact with a surface. Although it may seem like a contact force, it actually acts at the microscopic level between surfaces. Frictional force can slow down or stop the motion of objects.
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