Velocity and proper acceleration

In summary, there are resources available that discuss the relationship between IRF velocity function over time v(t) and the proper acceleration function over time a(t). Some helpful links include the Baez FAQ and a mathematical explanation provided in a blog post. However, there is a possibility that equation 8 in the blog post is incorrect, and further research may be needed. Additionally, posts #13, #14, #15, and #28 in a specific online thread may provide further insight into the topic.
  • #1
rhz_prog
17
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Do someone have links to resources stating the relationship between IRF velocity function over time v(t) and the proper acceleration function over time a(t) ?

IRF=Inertial Reference Frame

I had tried to use materials inside Baez FAQ :

http://math.ucr.edu/home/baez/physics/Relativity/SR/rocket.html

and did the math in my blog :

http://orimath.blogspot.com/2008/08/mathematical-basis-of-rtc7683.html

But it seems that equation 8 in that mathematical attempt is wrong.


Thanks in advance for your help.
 
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  • #2
rhz_prog said:
Do someone have links to resources stating the relationship between IRF velocity function over time v(t) and the proper acceleration function over time a(t)?
I haven't had time to read your blog, but you might find posts #13, #14, #15 (and the correction in post #28) of this thread helpful. All except the second half of post #15 applies to both uniform and non-uniform acceleration (in a straight line).
 
  • #3


Unfortunately, I am not able to access the specific links you have provided. However, in general, the relationship between velocity and proper acceleration in an IRF can be expressed through the following equation:

a(t) = γ^3 * v'(t)

Where a(t) is the proper acceleration function over time, v(t) is the velocity function over time, and γ is the Lorentz factor. This equation can also be written as:

a(t) = γ^3 * dv(t)/dt

This relationship shows that the proper acceleration experienced by an object in an IRF is directly related to its velocity and the Lorentz factor. As an object's velocity increases, so does its proper acceleration. This is due to the fact that as an object approaches the speed of light, the Lorentz factor increases and causes the proper acceleration to also increase.

You can find more information on this topic in various resources such as textbooks on relativity and online lectures on special relativity. Some recommended resources include:

1. "Introduction to Special Relativity" by Robert Resnick and David Halliday
2. "Special Relativity and Classical Field Theory" by Leonard Susskind and Art Friedman
3. "Special Relativity" lecture series by Leonard Susskind on YouTube
4. "Spacetime Physics" by Edwin F. Taylor and John Archibald Wheeler

I hope this helps and clarifies the relationship between velocity and proper acceleration in an IRF.
 

1. What is the difference between velocity and proper acceleration?

Velocity is a measure of the rate of change of an object's position with respect to time. It is a vector quantity that includes both speed and direction. Proper acceleration, on the other hand, is a measure of the rate of change of an object's velocity with respect to time. It is also a vector quantity, but it only takes into account the change in direction, not the change in speed.

2. How is proper acceleration calculated?

Proper acceleration is calculated by dividing the change in velocity by the change in time. This can be represented by the formula a = Δv/Δt, where a is the proper acceleration, Δv is the change in velocity, and Δt is the change in time. Proper acceleration is usually measured in units of meters per second squared (m/s²).

3. What is the importance of proper acceleration in physics?

Proper acceleration is important because it is a fundamental concept in the theory of relativity. It is used to describe the acceleration of an object as observed by an observer in a specific reference frame. Proper acceleration is also used in the study of objects in motion, such as spacecraft and satellites.

4. How does proper acceleration affect an object's trajectory?

Proper acceleration can affect an object's trajectory by changing its direction of motion. As an object accelerates, its velocity changes and it may veer off its original path. This change in direction can also cause the object to experience centripetal acceleration, which is the acceleration towards the center of a circular path.

5. Can proper acceleration be negative?

Yes, proper acceleration can be negative. This occurs when an object's velocity is decreasing, or when the object is decelerating. Negative proper acceleration is often referred to as acceleration in the opposite direction, or deceleration. It is important to note that negative proper acceleration is still a vector quantity and includes both magnitude and direction.

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