Work energy theorem to find the maximum compression

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SUMMARY

The discussion centers on applying the work-energy theorem to determine the maximum compression of a spring when a 6.0 kg box traveling at 3.0 m/s collides with it. The force constant of the spring is given as 75 N/cm. The initial kinetic energy (KE) of the box is calculated as 27 J, which is converted into spring potential energy at maximum compression. The relationship between kinetic energy and spring energy is established, leading to the conclusion that all initial kinetic energy is transformed into spring energy at the point of maximum compression.

PREREQUISITES
  • Understanding of the work-energy theorem
  • Knowledge of kinetic energy calculations
  • Familiarity with spring potential energy equations
  • Basic concepts of force constants in springs
NEXT STEPS
  • Study the derivation of the work-energy theorem in physics
  • Learn about the equations for spring potential energy, specifically \( PE = \frac{1}{2}kx^2 \)
  • Explore examples of energy conservation in elastic collisions
  • Investigate the effects of friction on energy transfer in mechanical systems
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and energy conservation, as well as educators seeking to explain the work-energy theorem and its applications in real-world scenarios.

negatifzeo
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Homework Statement


A 6.0 kg box moving at 3.0 m/s on a horizontal, frictionless surface runs into a light spring of force constant 75N/cm. Use the work energy theorem to find the maximum compression of the spring.


Homework Equations


Wtotal=K2-K1

k1=1/2mv^2=27 J


The Attempt at a Solution


I mus tbe missing something conceptually here, this doesn't appaear to be a difficult problem but I just don't know how to approach it. I don't know the total work, how do I find it?
 
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Can you find the kinetic energy of the box before it hits the spring?
 
At the maximum compression the box stops
So all the initial Ke is now spring energy.
What's the equation for energy stored in a spring in terms of spring force and extention?
 

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