Discuss the meaning of the result for total energy in a whole mass spring system

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SUMMARY

The total energy in a mass spring system is expressed as (v^2*m/4)[sin^2(nt) + sin^2(3nt)]. This expression indicates that the energy oscillates periodically over time, which contradicts physical expectations in real systems where energy should either decay due to friction or remain constant. Therefore, the result suggests an idealized model that does not account for energy loss mechanisms, highlighting the importance of considering damping effects in practical applications.

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Homework Statement


Had to work out the total energy in a mass spring system (Part d of question), which has been found to be:

(v^2*m/4)[sin^2(nt) + sin^2(3nt)]


The next part of the question (e) says to 'Discuss the meaning of your result to part (d) above'

And I have no idea what to write! It is worth nearly 10% of the whole assignment! Any help would be much appreciated.

Thanks
 
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Your expression for total energy depends on time periodically. This cannot be true. It must either monotonically decay with time (if friction/resistance is present), or be constant.
 

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