Kinetic Energy - use a log scale or not?

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SUMMARY

The discussion centers on the appropriate method for comparing kinetic energies of balls and eggs with equal mass but varying velocities. The kinetic energy is calculated using the formula KE = 0.5*m*v². Participants debate whether to use a linear interval of one standard deviation or to convert kinetic energy to a logarithmic scale, with a consensus leaning towards the log scale due to the non-linear relationship between kinetic energy and velocity. The need for clarity on the distribution of velocities and energies among the objects is also emphasized.

PREREQUISITES
  • Understanding of kinetic energy calculation using KE = 0.5*m*v²
  • Familiarity with standard deviation and its application in statistical analysis
  • Knowledge of logarithmic scales and their significance in data representation
  • Basic principles of physics related to motion and energy
NEXT STEPS
  • Research the implications of using logarithmic scales in physics, particularly in energy comparisons
  • Explore statistical methods for analyzing distributions of kinetic energies
  • Learn about the effects of rotational kinetic energy on overall energy calculations
  • Investigate case studies or experiments involving kinetic energy comparisons in different objects
USEFUL FOR

Students studying physics, educators teaching kinetic energy concepts, and researchers conducting experiments on energy comparisons in various objects.

Luke_G
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Homework Statement


Lets say we have a series of balls and an eggs. All items have equal mass but are traveling at different velocities.

Thus they have differing kinetic energies.

Now, for each 'ball' object we have, we want to find an egg object with a similar kinetic energy. Let's say, within +-1 standard deviation interval

Would it be correct to take the kinetic energy as it is and use the linear interval of 1SD, or convert to the kinetic energy to a logarithmic scale

Homework Equations



KE = 0.5*m*v²

The Attempt at a Solution


My guess is to use a log scale as Kinetic energy does not increase linearly with speed
 
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I've never seen a physics problem like this. Is there any way you can be more specific in your description of the situation? Is this a textbook problem? Are you just trying to conduct an experiment? What exactly are the difficulties in finding the difference in kinetic energy of an egg and and that of a ball?
 
Luke_G said:
we want to find an egg object with a similar kinetic energy
What does that mean? Do you want the probability that there exists an egg object in that KE range? Or the expected fraction of eggs in that range? Or...?
Is the distribution of energies known?
Do the balls and eggs have the same distribution of velocities? Of energies?
(Do the balls and eggs all have the same masses?)
Luke_G said:
My guess is to use a log scale
Use a log scale for what, exactly? Maybe you could illustrate with a sample calculation.
 
Shouldn't you include the kinetic energy of the rotation of the objects?
 

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