What is the length of the spring

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    Length Spring
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Homework Help Overview

The problem involves two identical weights hanging from a spring, with a focus on determining the length of the spring when it is under tension. The subject area relates to mechanics and spring dynamics.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the forces acting on the spring and question the origin of the variable "t" in the equations presented. There is a request for clarification regarding the setup, particularly the figure that illustrates the problem.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the problem setup and the variables involved. Some have attempted to describe the configuration of the weights and the spring, while others express confusion due to the lack of a visual representation.

Contextual Notes

There is a noted absence of a figure that is crucial for understanding the problem setup, leading to questions about the arrangement of the weights and the spring. Participants are working with limited information and are trying to clarify assumptions about the forces at play.

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Homework Statement



Two identical weights of mass m hang motionless
from massless strings attached to the two ends of a
spring, as shown in the figure. The spring constant
of the spring is k. What is the length of the spring,
if its relaxed length is L0?

Homework Equations


f = -kx
f = ma


The Attempt at a Solution



2t = -kx
 
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tnutty said:
Two identical weights of mass m hang motionless
from massless strings attached to the two ends of a
spring, as shown in the figure.

Could you please either scan and attach the figure, or at least describe it?

The Attempt at a Solution



2t = -kx

Where did the "t" come from?
 


No picture - can't tell what is going on from the written description.
 


OK, so where does t come from?
 


The picture sort of looks like this ;

______springIsHereOntheTable_______
|...ignore these dots......|
|.........|
|.........|<-those lines at the end are a string.
m1.........m2

so the spring is on a table and attached to the left if it is a string which passes a
massless pug at the corner of the table and m1 is hanging on that string at the left
side of the table and m2 is attached to the string on the right side which is also hanging
on the string.
 

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