Spring acting on an object (dynamics)

  • Thread starter Thread starter Femme_physics
  • Start date Start date
  • Tags Tags
    Dynamics Spring
Click For Summary
SUMMARY

The discussion revolves around a physics problem involving a 12 kg box pressed by a spring with a hardness coefficient of 800 N/m. The participants analyze the box's velocity at point B (0.5m from the starting point) and the distance it travels before stopping, factoring in kinetic friction of 0.15. Key formulas discussed include the kinetic energy equation (Ek = mv²/2) and the elastic potential energy from the spring (Eel = c * OA² / 2). The conversation emphasizes the conversion of elastic energy to kinetic energy while accounting for energy lost due to friction.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with kinetic and potential energy concepts
  • Basic knowledge of friction and its effects on motion
  • Ability to apply energy conservation principles in mechanics
NEXT STEPS
  • Study the derivation and application of the kinetic energy formula (Ek = mv²/2)
  • Learn about the work-energy principle and how it relates to friction
  • Explore the concept of elastic potential energy and its calculations
  • Investigate real-world applications of spring dynamics in mechanical systems
USEFUL FOR

Students studying physics, particularly those focusing on mechanics, as well as educators seeking to enhance their understanding of energy transformations in dynamic systems.

  • #61
Why do ideal springs stop at xf = 0? We have friction in this problem, does that mean it really doesn't stop at xf = 0, but xf < 0?
 
Physics news on Phys.org
  • #62
Femme you have a lot of interesting physics problems. I want your book lol
 
  • #63
flyingpig said:
Why do ideal springs stop at xf = 0? We have friction in this problem, does that mean it really doesn't stop at xf = 0, but xf < 0?

Yes, you're right. :)
If the block is stopped by friction before xf = 0, then we will have xf < 0.
That's what you get for things not being ideal (since the problem is not "frictionless")! ;)
 
  • #64
Is that also true for vertical springs?