# What is the definition of p_Θ?

Gold Member

## Homework Statement

What is the definition of p_Θ?

## Homework Equations

I search all over the web using the keyword linear "momentum polar coordinates", "lagrangian in polar coordinates", "hamiltonian in polar coordinates", "momentum in 2D polar coordinates" for about half an hour.
but i fail to find it.

## The Attempt at a Solution

I think it is either:
1. p_Θ = m*(r*d/dt(θ))^2
2. p_Θ = m*(d/dt(θ))^2

which one is correct? Thank you!

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BvU
Homework Helper
2019 Award
##p_\theta## is whatever the author of the context defines it to be. Without a bit more of that context it is impossible to help you.

I find it very hard to believe you were given an exercise for which the full problem statement is actually
What is the definition of p_Θ?
Your relevant equations are not equations at all and how long you searched for them is not relevant

Neither 1 nor 2 is correct in your attempt at a solution. Is my bet.

Please start over. I do want to help, even if this reply seems a bit sour...

Orodruin
Staff Emeritus