# Eliminating Lambda to Solve Question 2(b) of Physics Homework

• Cosmossos
In summary, the conversation is about a homework problem involving Lagrangian and potential energy, and the question is how to eliminate \lambda to write the requested U (wave). The expert advises to expand \lambda and combine the two integrals to solve the problem.
Cosmossos

## Homework Statement

Hello ,
Please look at question 2 (b).
http://phstudy.technion.ac.il/~wn114101/hw/wn2010_hw05.pdf

I got that the lagragian is the potential energy (as in part a of the question)
How Do I eliminate the lamda so I can write the U (wave) as requested?
Or In Other word, How do I do b?
thanks

Last edited by a moderator:
Cosmossos said:

## Homework Statement

Hello ,
Please look at question 2 (b).
http://phstudy.technion.ac.il/~wn114101/hw/wn2010_hw05.pdf

I got that the lagragian is the potential energy (as in part a of the question)
How Do I eliminate the lamda so I can write the U (wave) as requested?
Or In Other word, How do I do b?
thanks

Quick note: The Lagrangian is not the potential energy. It does have a potential term in it but it is not the potential energy; it is the difference between the kinetic energy and the potential energy.

The problem looks pretty straightforward. If you expand $\lambda$ to the two terms inside the bracket and then combine the two integrals, you should get the form requested.

Last edited by a moderator:

## What is Lambda in Physics?

Lambda, denoted as λ, is a unit of measure in physics that represents the wavelength of a wave or the length of a vector in a mathematical equation.

## Why is Eliminating Lambda important for Question 2(b) in Physics Homework?

Eliminating Lambda is important for Question 2(b) in Physics Homework because it allows us to simplify the equation and solve for a specific variable without the need to calculate the wavelength.

## How do you Eliminate Lambda in Physics?

To eliminate Lambda in Physics, you can use the formulas and equations provided in the question and substitute Lambda with its numerical value or a solved variable from a previous question.

## Can Eliminating Lambda be used in other areas of Physics?

Yes, Eliminating Lambda can be used in many areas of physics where the wavelength of a wave or the length of a vector is involved in an equation or problem.

## Are there any tips for effectively Eliminating Lambda in Physics Homework?

Some tips for effectively Eliminating Lambda in Physics Homework are to carefully read and analyze the question, understand the relationship between Lambda and other variables in the equation, and practice using substitution and simplification techniques to eliminate Lambda.

Replies
1
Views
2K
Replies
14
Views
3K
Replies
1
Views
2K
Replies
13
Views
2K
Replies
10
Views
898
Replies
4
Views
3K
Replies
2
Views
1K
Replies
12
Views
2K
Replies
2
Views
3K
Replies
1
Views
2K