Calculating Wave Speed for a 6m Rope with 7kg Mass and 140 N Force

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Homework Help Overview

The problem involves calculating the speed of a wave on a 6m rope with a mass of 7kg that is under a tension of 140 N. The original poster expresses uncertainty about the relevant equations and their application.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the need for specific equations related to wave speed on a stretched string, questioning whether the original poster is familiar with them. There is also a mention of potential missing information from the problem statement.

Discussion Status

The discussion is ongoing, with participants exploring the necessary equations and clarifying the problem details. Some guidance has been provided regarding the equations for wave speed, but there is no consensus on the correct approach yet.

Contextual Notes

There is mention of the original poster possibly omitting essential information and a correction regarding the mass of the rope, which may impact the calculations. The context suggests that participants are working within the constraints of homework expectations.

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Homework Statement



A 6m length of rope has a mass of 7kg. It is pulled taut with a force of 140 N. What is the speed of the wave for the rope?

Homework Equations



i have no idea...
v=λf
L=λ/2

The Attempt at a Solution


I have no idea if I have the right formulas...
 
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Can you post the full question? In summarizing the details from your textbook, you have omitted essential information.
 
That is the whole question... I may have missed some formulas during class however.
 
There is an equation for the speed of a wave along a stretched string. It involves tension and mass information...have you met this equation?
 
Yeah I kept on using that equation but it din't work. I realized at about 4am that it was actually .7kg...
 

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