How can energy be lost to friction?

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SUMMARY

Energy is lost to friction primarily as heat energy, which occurs when kinetic energy is converted during motion, such as a car skidding to a stop. The work done by friction forces, as described by Newton's third law, quantifies this energy loss. Practical examples include the warming of vehicle brakes and the heat generated when rubbing hands together. Understanding these concepts is essential for calculating energy loss due to friction in various scenarios.

PREREQUISITES
  • Understanding of kinetic energy and its conversion
  • Familiarity with Newton's third law of motion
  • Basic principles of thermodynamics related to heat energy
  • Ability to perform work-energy calculations
NEXT STEPS
  • Research the principles of kinetic energy and its transformations
  • Study Newton's laws of motion in detail
  • Explore thermodynamic concepts related to heat transfer
  • Learn how to calculate work done by friction forces in various scenarios
USEFUL FOR

Students of physics, engineers, and anyone interested in understanding the principles of energy loss due to friction in mechanical systems.

Miguell
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hi everyone! I'm new here. I was wondering how energy can be lost to friction? How would one even calculate that? Thanks!
 
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Miguell said:
hi everyone! I'm new here. I was wondering how energy can be lost to friction? How would one even calculate that? Thanks!
If a car skids to a stop, what form of energy exists beforehand? Is energy in that form lost during the skid?
 
Miguell said:
hi everyone! I'm new here. I was wondering how energy can be lost to friction? How would one even calculate that? Thanks!
Can you explain what is puzzling you? If you slide a box along the ground, any kinetic energy is rapidly lost. That seems an obvious example.
 
Miguell said:
How would one even calculate that?
It's the difference in work done by the 3rd law pair of friction forces.
 
:welcome:

I'm sure you have experienced it yourself. Energy lost to friction turns into heat energy. Have you not felt the brakes on vehicles get warm? Or felt you palm get warm when you rub it on a rough surface?
 
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