Friction: Newton's Laws & Applied Force

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In summary, friction is a force that resists motion between two surfaces in contact. Newton's first law of motion states that an object will remain at rest or in motion unless acted upon by an external force, and friction can act as this external force. There are two types of friction: static, which resists motion of a stationary object, and kinetic, which resists motion of an object already in motion. Friction can be reduced by using lubricants or smoother surfaces, as well as decreasing the force between the surfaces.
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jakeus
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Does the force of Friction acting on an object equal the applied force on an object if it is in constant motion?

Is that one of Newton's Law's? Which?

Thank you :smile:
 
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Newton's 2nd law tells you that if an object has constant velocity (thus zero acceleration), then the net force on it must be zero.
 
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Yes, friction is one of the forces described in Newton's Laws of Motion. It is the force that opposes the motion of an object and is directly related to the applied force on the object. According to Newton's Second Law, the force of friction is equal to the product of the coefficient of friction and the normal force acting on the object. However, in order for an object to remain in constant motion, the applied force must be greater than the force of friction. This is described in Newton's First Law, also known as the Law of Inertia, which states that an object at rest or in motion will remain in that state unless acted upon by an external force. Therefore, in order for an object to continue moving with constant velocity, the applied force must be greater than the force of friction.
 

What is friction?

Friction is a force that resists the motion between two surfaces that are in contact with each other.

What is Newton's first law of motion?

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest and an object in motion will remain in motion at a constant velocity unless acted upon by an external force.

How does friction relate to Newton's first law?

Friction is a force that opposes motion, so it can act as the external force that causes an object to come to a stop or change its velocity. In other words, friction can cause an object to follow Newton's first law of motion.

What is the difference between static and kinetic friction?

Static friction is the force that resists the motion of an object that is not yet moving, while kinetic friction is the force that resists the motion of an object that is already in motion.

How can we reduce friction?

Friction can be reduced by using lubricants, such as oil or grease, between two surfaces, or by using smoother surfaces. Additionally, reducing the force pushing the surfaces together can also decrease friction.

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