Maximum Compression of buffers for a Train

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Homework Help Overview

The discussion revolves around calculating the maximum compression of buffers for a train, given its mass, velocity, and spring constant. The problem is situated within the context of energy conservation in mechanics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the application of the conservation of energy principle, questioning how kinetic energy relates to potential energy in the context of the problem. There is uncertainty about integrating velocity into the equations presented.

Discussion Status

Some participants have suggested using conservation of energy as a guiding principle, while others are exploring how to correctly apply kinetic and potential energy equations. There is an ongoing exploration of different interpretations of the problem without a clear consensus on the approach.

Contextual Notes

Participants express confusion regarding the integration of velocity into the energy equations and the overall setup of the problem. There is an indication of missing clarity on how to transition from kinetic energy to potential energy in the context of maximum compression.

JamesC
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Homework Statement


I need to work out the maximum compression of buffers for a train with 1.2kg mass, traveling at 0.45m/s and the spring constant, k, is 4.8x10^3 Nm^-1


Homework Equations


I tried using 1/2kx^2 but I don't know if I am doing it right


The Attempt at a Solution


I couldn't attempt the question because I don't know how the velocity is put into the equation, can anyone help?
 
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use conservation of energy

you'll need the v to plug it in the formula for kinetic energy

marlon
 
But that's what I don't understand about the question, I worked out the kinetic energy, but where is it placed in the equation which I attempted with?
 
JamesC said:
But that's what I don't understand about the question, I worked out the kinetic energy, but where is it placed in the equation which I attempted with?

EK + EP = E_total

The trick is to apply the above equation onto two different situations :

EK_initial + EP_initial = EK_final + EP_final

marlon
 

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