Frame of reference and Newton's third law

In summary, the conversation discusses the validity of Newton's laws in a rotating frame of reference and the effect of assuming a fictitious force. There is a question about the impact on Newton's third law.
  • #1
wikidrox
44
0
I can not find the answer for this

In a rotating frame of reference, Newton's first and second laws remain valid if we assume that a fictitious force equal to mv^2/r is acting. What effect does this assumption have on the validity of Newton's 3rd law?
 
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  • #2
wikidrox said:
I can not find the answer for this

In a rotating frame of reference, Newton's first and second laws remain valid if we assume that a fictitious force equal to mv^2/r is acting. What effect does this assumption have on the validity of Newton's 3rd law?

What do you think the effect is? If you always have to add a force to anything that's happening?
 
  • #3


The assumption of a fictitious force in a rotating frame of reference does not affect the validity of Newton's third law. This law states that for every action, there is an equal and opposite reaction. In other words, when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object.

This remains true even in a rotating frame of reference, where the fictitious force may be present. The forces between objects in a system are still equal and opposite, regardless of the frame of reference. Therefore, Newton's third law remains valid in both inertial and non-inertial frames of reference.
 

1. What is a frame of reference?

A frame of reference is a set of coordinates used to describe the position and motion of objects. It can be a fixed point, an object, or a coordinate system.

2. How does Newton's third law relate to frame of reference?

Newton's third law states that for every action, there is an equal and opposite reaction. This means that in a frame of reference, if one object exerts a force on another object, the second object will exert an equal and opposite force on the first object.

3. Can the frame of reference affect the application of Newton's third law?

Yes, the frame of reference can affect the application of Newton's third law. In some frames of reference, the forces may appear unbalanced, but in reality, they are still following Newton's third law.

4. What is an inertial frame of reference?

An inertial frame of reference is a frame of reference in which Newton's first law applies. This means that if there are no external forces acting on an object, it will either remain at rest or continue to move at a constant velocity.

5. How does the concept of relative motion relate to frame of reference?

The concept of relative motion is closely tied to frame of reference. In a frame of reference, the motion of an object can be described as either absolute or relative to another object. The relative motion between two objects can change depending on the chosen frame of reference.

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