The force of friction is maximum when the surface?
Answers
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Concept Introduction: Friction is present in every thing in real life.
Explanation:
We have been Given: The force of friction is maximum when the surface?
We have to Find: The force of friction is maximum when the surface?
When two bodies are in contact a force acts on those bodies that resist any relative motion between them. This force is called frictional force or friction force. It is an adjustive force. That means it adjusts its magnitude and direction to prevent any relative motion between the bodies in contact. The Friction Force is a result of relative roughness between the bodies. And its magnitude depends upon the normal force acting between the body and the coefficient of friction between the surfaces in contact.
The Friction Force is of different types depending upon the relative motion between the bodies in contact. When there is no relative motion between the bodies and a force tries to initiate motion the Friction Force resists the start of the motion and is called the Limiting Friction, it has the highest coefficient of friction for any given surface. This magnitude of friction is called the coefficient of static friction.
But if the force applied is greater than the Limiting Friction then the bodies come in motion relative to each other and the resistive friction that comes into effect is called the Kinetic Friction and it opposes the motion, decreasing relative velocity or acceleration. The coefficient of kinetic friction between the surfaces determines the magnitude of the frictional force. Also as explained the coefficient of static friction is greater than the coefficient of kinetic friction. And thus, the maximum force of friction when the is just beginning to move is known as the Limiting Friction.
Final Answer: thus, the maximum force of friction when the is just beginning to move is known as the Limiting Friction.
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