Mechanics Projectile / Coriolis Effect

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Homework Help Overview

The discussion revolves around a mechanics problem involving projectile motion and the Coriolis effect. Participants are exploring the definitions and implications of the Coriolis force in the context of the problem presented.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants are questioning the definition of the Coriolis force and its application in the problem. There are requests for elaboration on the definitions being used and the formulas related to time of flight and motion under the influence of Coriolis force.

Discussion Status

The discussion is active with participants seeking clarification on the Coriolis force and its mathematical representation. Some guidance has been offered regarding the definitions, but there is no explicit consensus on the approach to take or the formulas to use.

Contextual Notes

Participants are navigating through various definitions and formulas related to the Coriolis effect, indicating a potential lack of familiarity with the topic. There is mention of an approximate formula for time of flight, but specifics are not provided.

Ted123
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Homework Statement


[PLAIN]http://img232.imageshack.us/img232/82/mechanics.jpg


Homework Equations





The Attempt at a Solution



Where to start?
 
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Welcome to PF!

Hi Ted123! Welcome to PF! :wink:

Start with the definition of Coriolis force …

2m u x Ω :smile:
 


tiny-tim said:
Hi Ted123! Welcome to PF! :wink:

Start with the definition of Coriolis force …

2m u x Ω :smile:

Can you elaborate on this as I'm not at all sure where the method's taking me - I haven't seen that definition before!
 
Ted123 said:
Can you elaborate on this as I'm not at all sure where the method's taking me - I haven't seen that definition before!

What definition of Coriolis force have you been using?

(and btw, what approximate formula will you be using for the time of flight?)
 
tiny-tim said:
What definition of Coriolis force have you been using?

(and btw, what approximate formula will you be using for the time of flight?)


Actually, I tell a lie: I've seen it like

{\bf {text F}_{coriolis} = -2m(\omega \times {\bf u} )

I've also seen the formula:

D' {\bf x} = D {\bf x} + \omega \times {\bf x}

mD^2{\bf x} = m{\bf g}

and \displaystyle{\bf x}(t) = {\bf x}(0) + {\bf u}t + \frac{1}{2} {\bf g}t^2 + {\bf u} \times \omega t^2 + \frac{1}{3}{\bf g} \times \omega t^3
 
Hi Ted123! :smile:

Well, the last formula looks correct, but you'll never remember it for the exam! :rolleyes:

so can you prove it (from 2m u x ω)? :wink:
 

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