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

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

1. What are the different types of contact forces?
Ans. The different types of contact forces are frictional force, normal force, tension force, applied force, and spring force.
2. How does frictional force work?
Ans. Frictional force is a force that opposes the motion or attempted motion of an object. It is caused by the roughness of surfaces in contact. Frictional force acts in the opposite direction to the motion or the force that is trying to cause the motion.
3. What is the normal force?
Ans. The normal force is the force exerted by a surface to support the weight of an object resting on it. It acts perpendicular to the surface and prevents the object from sinking into or passing through the surface.
4. How is tension force created?
Ans. Tension force is created when an object is pulled or stretched by a force applied to it. It is transmitted through a string, rope, or any other flexible connector and acts in the direction of the connector.
5. What is spring force?
Ans. Spring force is a force exerted by a stretched or compressed spring. It follows Hooke's Law, which states that the force is directly proportional to the displacement of the spring from its equilibrium position. When the spring is stretched, the force is pulling, and when it is compressed, the force is pushing.
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