Mass attached to vertical spring

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SUMMARY

The discussion centers on a mass of 0.4 kg attached to a horizontal spring with a spring constant of 80 N/m, displaced 0.1 m from its equilibrium position. The objective is to determine the velocity of the mass as it passes through the equilibrium point during simple harmonic motion. The calculated velocity is 0.7 m/s, but the solution key indicates it should be 1.4 m/s, referencing Serway Physics, Volume 8, Chapter 13, Page 451. To resolve the discrepancy, a free body diagram and Newton's Second Law (NII) are recommended for further analysis.

PREREQUISITES
  • Understanding of simple harmonic motion principles
  • Familiarity with Newton's Second Law (NII)
  • Knowledge of kinetic energy calculations
  • Ability to sketch and interpret free body diagrams
NEXT STEPS
  • Review the principles of simple harmonic motion in detail
  • Study the application of Newton's Second Law in oscillatory systems
  • Learn how to derive velocity functions from position functions in harmonic motion
  • Examine the kinetic energy formula in the context of spring systems
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and oscillatory motion, as well as educators looking for examples of simple harmonic motion problems.

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Homework Statement



an object of mass 0.4kg is attached to horizontal spring of ,,spring constant 80N/m,,and it is displaced 0.1m from equilibrium postion and released from rest,,such that it perform up and down simple harmonic motion.find its velocity when it passes through equilibrium point

Homework Equations



k.e=kinetic energy...k.e=0.5><(mg)^2/k...

3. The attemp at a solution
solving above equation will give,,v=0.7,,,but in solution key it is 1.4m/s ref(serway physics vol 8..ch#13,pg451,,ques,4
 
Physics news on Phys.org
Sketch a free body diagram for the mass and write NII for its motion. Then use the initial conditions to find the position of the mass as a function of t, from which you can obtain its velocity as a function of t.
 

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