Relativity Frames Of Reference

In summary, the problem at hand involves finding the transformation between two frames, one of which is accelerating uniformly along the x-axis relative to an inertial frame. The origins of the two frames coincide at t=0. The Lorentz transformations cannot be used in this case, and a tensor equation is needed instead. However, the Lorentz transformation can still be applied by considering the instantaneous speed with respect to the observer and transforming the four-acceleration properly. This results in the formula for the Lorentz transformation.
  • #1
astrozilla
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Homework Statement


A frame is accelerating uniformly along the x-axis relative to an inertial frame (x,y,z) with acceleration a.Find the transformation between the frames given that the origins concide at t=0.


Homework Equations


The lorentz transformations cannot apply here ,but what equation has to be used ?


The Attempt at a Solution


I think a tensor equation is what we need because tensor equations i.e maxwell equations in tensor notation are frame invariant.
 
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  • #2
astrozilla said:

Homework Statement


A frame is accelerating uniformly along the x-axis relative to an inertial frame (x,y,z) with acceleration a.Find the transformation between the frames given that the origins concide at t=0.


Homework Equations


The lorentz transformations cannot apply here ,but what equation has to be used ?


The Attempt at a Solution


I think a tensor equation is what we need because tensor equations i.e maxwell equations in tensor notation are frame invariant.

Lorentz transformation applies just fine with instantaneous speed with respect to the observer. The boost from observer to the accelerating frame must be able to transform the four-acceleration properly, and the integration of four-acceleration over proper time gives you the four-velocity. Satisfying these two condition gives you the formula for the Lorentz transformation.
 

1. What is a frame of reference in the context of relativity?

A frame of reference in relativity refers to a coordinate system used to measure the position, velocity, and acceleration of objects in space and time. It is an essential concept in understanding how observers perceive the same event differently based on their relative motion.

2. What is the difference between an inertial and non-inertial frame of reference?

An inertial frame of reference is a coordinate system in which the laws of motion hold true, and there is no acceleration. In contrast, a non-inertial frame of reference is a system that is accelerating, and the laws of motion do not hold true. In special relativity, only inertial frames of reference are considered valid.

3. How does the theory of relativity change our understanding of frames of reference?

The theory of relativity revolutionized our understanding of frames of reference by showing that the laws of physics are the same in all inertial frames of reference. It also introduced the concept of time dilation and length contraction, which are observed differently by observers in different frames of reference.

4. Can the speed of light be used as a frame of reference?

No, the speed of light cannot be used as a frame of reference because it is constant in all inertial frames of reference. According to the theory of relativity, the speed of light is the same for all observers, regardless of their relative motion.

5. How do we determine which frame of reference is the most suitable for a given situation?

The most suitable frame of reference for a given situation depends on the observer's perspective and the type of motion being observed. In many cases, the most convenient frame of reference is one that is stationary or moving at a constant velocity relative to the objects being observed. However, in some cases, non-inertial frames of reference may also be used, such as when dealing with accelerated objects or gravity.

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