Why the time is the quarter of a period?

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SUMMARY

The discussion focuses on the oscillatory motion of a mass-spring system, specifically analyzing why the time taken to move from the lowest position to the equilibrium position is one-quarter of the total period (t = T/4). The problem involves a 3 kg mass that stretches a spring by 25 cm and is further extended by 15 cm before being released. The key takeaway is understanding the relationship between time intervals in simple harmonic motion, where the time to reach the equilibrium position is a quarter of the full oscillation period.

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  • Understanding of simple harmonic motion (SHM)
  • Knowledge of mass-spring systems
  • Familiarity with the concepts of period (T) and time (t)
  • Basic physics equations related to oscillations
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  • Study the derivation of the period of a mass-spring system
  • Learn about energy conservation in oscillatory motion
  • Explore the concepts of damping and resonance in oscillations
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Students studying physics, particularly those focusing on mechanics and oscillatory systems, as well as educators looking to clarify concepts of simple harmonic motion.

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Homework Statement


When the brick with mass 3 kg is hanged in a spring, it is lengthened 25 cm. If we lengthen the spring with 15 cm more and leave it free how may times does the brick take to come back to the equilibrium position

Homework Equations


In the solution it says t=T/4

The Attempt at a Solution


I understand d the other part, but why is t=T/4 (t-time, T-period)
 
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zade70 said:

Homework Statement


When the brick with mass 3 kg is hanged in a spring, it is lengthened 25 cm. If we lengthen the spring with 15 cm more and leave it free how may times does the brick take to come back to the equilibrium position

Homework Equations


In the solution it says t=T/4

The Attempt at a Solution


I understand d the other part, but why is t=T/4 (t-time, T-period)
Consider three positions, the lowest position of the oscillations (i.e. the release position), the equilibrium position, and the highest oscillation position. If it takes time t to rise from lowest to equilibrium, how long will it take to return to the lowest position?
 
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This diagram might help?
2uppnya.gif
 
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