Understanding Newton's 3rd Law: Reactionary Forces to Friction

In summary, the reactionary force to friction is the force that occurs in response to an object moving against a surface with friction and is equal in magnitude and opposite in direction to the force of friction. It is related to Newton's Third Law of Motion, affected by factors such as the coefficient of friction, normal force, and surface area, and cannot be greater than the force of friction. This force impacts an object's motion by acting in the opposite direction and affecting its acceleration when moving against a surface with friction.
  • #1
sarm2005
6
0
Ok so you push a box forward and the box exerts a force of friction backwards


Would the reactionary force to the friction on the box (the ground pushing the box backwards) be the force of the box pushing the ground forwards
 
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  • #2
yea. that's given by N3L. but it's much more conveinent to think in terms of [tex]F_{fric}=\mu N[/tex]. calculating the entire shift of the Earth everything we want to do a frictional problem's a bit of a stretch :D
 
  • #3
I wasn't actually trying to calculate it. Just making sure I understand Newton's 3rd law. :smile:
 

What is reactionary force to friction?

The reactionary force to friction is the force that occurs in response to an object moving against a surface with friction. It is equal in magnitude and opposite in direction to the force of friction.

How is reactionary force to friction related to Newton's Third Law of Motion?

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. The reactionary force to friction is an example of this law, as the force of friction is the action and the reactionary force is the equal and opposite reaction.

What factors affect the magnitude of the reactionary force to friction?

The magnitude of the reactionary force to friction is affected by the coefficient of friction between the two surfaces, the normal force pressing the surfaces together, and the surface area in contact between the two surfaces.

Can the reactionary force to friction be greater than the force of friction?

No, the reactionary force to friction is always equal in magnitude and opposite in direction to the force of friction. If the force of friction were to increase, the reactionary force would also increase to maintain this balance.

How does the reactionary force to friction impact an object's motion?

The reactionary force to friction acts in the opposite direction of an object's motion, causing it to slow down or eventually come to a stop. It also plays a role in determining an object's acceleration when moving against a surface with friction.

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