Find E' in FLP Volume 1 17.4: Why Does It Work?

In summary, In FLP Volume 1 section 17.4, Feynman derives the 4 momentum by taking the expression for v' (velocity in the moving reference frame) and squaring it, subtracting it from one, taking the square root, and taking the reciprocal to find E'. He then explains that this procedure is correct because it follows the same relation between E and v as E' and v'. This clarifies why the operation on its own may not have made sense.
  • #1
Special K
3
0
In FLP Volume 1 section 17.4, Feynman derives the 4 momentum. He gives the expression for v'(velocity in the moving reference frame) then says to find E' we need to square v', subtract it from one, take the squad root, and take the reciprocal. He does this to get E' is simply mo times the above procedure performed to v'. Why is this procedure correct? I do not understand why those Operations on v' then multiplying by mass give E' necessarily? Unless it just worked out that way?
 
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  • #2
Hello K, :welcome:

Do you agree with (17.6)$$ E = m = m_0/\sqrt{1-v^2} \quad ? $$ because that is what he does with ##v'## to get ##E'##
 
  • #3
BvU said:
Hello K, :welcome:

Do you agree with (17.6)$$ E = m = m_0/\sqrt{1-v^2} \quad ? $$ because that is what he does with ##v'## to get ##E'##
Oh I see, he was just taking v' and putting it in the same relation to E' as E is to v. That all makes sense, thank! I figured it had to be from some other formula, because the operation on its own didn't click
 

FAQ: Find E' in FLP Volume 1 17.4: Why Does It Work?

What is the purpose of finding E in FLP Volume 1 17.4?

The purpose of finding E in FLP Volume 1 17.4 is to determine the value of E in the formula for flow logic programming. This value is crucial for accurately predicting the behavior of a system and can help in making informed decisions.

How does finding E in FLP Volume 1 17.4 help in solving problems?

Finding E in FLP Volume 1 17.4 helps in solving problems by providing a key component in the flow logic programming formula. With the accurate value of E, the formula can be used to analyze and predict the behavior of a system, which can then be used to identify and solve any issues that may arise.

What factors influence the value of E in FLP Volume 1 17.4?

Several factors can influence the value of E in FLP Volume 1 17.4, including the complexity of the system, the number of variables involved, and the type of problem being solved. Additionally, the accuracy of data and assumptions used in the formula can also impact the value of E.

Can the value of E in FLP Volume 1 17.4 change over time?

Yes, the value of E in FLP Volume 1 17.4 can change over time as the system being analyzed may experience changes or updates. It is important to regularly re-evaluate the value of E to ensure accurate predictions and problem-solving.

Are there any limitations to finding E in FLP Volume 1 17.4?

While finding E in FLP Volume 1 17.4 can be a useful tool, it is important to note that it is not a one-size-fits-all solution. The accuracy of the formula and the value of E can be affected by numerous factors, and it may not be suitable for all systems or problems. It is crucial to use critical thinking and consider other factors when using this method.

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