Question regarding Elastic Potential Energy

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Homework Help Overview

The discussion revolves around a problem in the context of elastic potential energy, specifically involving a particle attached to an elastic string. The original poster is seeking clarification on whether the distance moved by the particle includes the natural length of the string when projected downwards.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster questions if the distance moved by the particle includes the natural length of the string. Some participants provide their interpretations regarding the distance measurement in relation to the string's natural length.

Discussion Status

The discussion is ongoing, with some participants expressing confusion about the distance measurement. There is an indication that one participant has come to an understanding, but no consensus has been reached on the interpretation of the problem.

Contextual Notes

The original poster emphasizes the need for proof regarding the distance moved, which suggests a focus on the underlying principles of elastic potential energy and the mechanics involved in the problem setup.

garyljc
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Hey guys ,
I got another question , here goes :

A particle P of mass m is attached to one end of a light elastic string of natural length l whose other end is atached to a point A on a ceiling. When P hangs in equilibrium AP has legth 5/3l. Show that if P is projected vertically downwards from A with speed *squareroot*3gl/2 , P will first come to instantaneous rest after moving a distance of 10l/3 .

What confuses me , is the distance moved . Does it include the natural length or not ? Please show me the proof :biggrin: ... Geeez ... thanks :shy:
 
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hmmm ... no one ? I just need to know does the distance includes the natural length =) Can anyone tell me please ?
 
garyljc said:
Hey guys ,
I got another question , here goes :

A particle P of mass m is attached to one end of a light elastic string of natural length l whose other end is atached to a point A on a ceiling. When P hangs in equilibrium AP has legth 5/3l. Show that if P is projected vertically downwards from A with speed *squareroot*3gl/2 , P will first come to instantaneous rest after moving a distance of 10l/3 .

What confuses me , is the distance moved . Does it include the natural length or not ? Please show me the proof :biggrin: ... Geeez ... thanks :shy:
The question says that it is projected vertically from A which is the point where the string is attached. So the distance includes the length at rest of the string.
 
ahhh , got it ... I'm confuse before that lol . thanks = )
 

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