Does Density Affect Falling Object Speed?

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SUMMARY

The discussion centers on the effect of density on the speed of falling objects in the presence of air resistance. It concludes that while Galileo's principle states that objects fall at the same rate in a vacuum, the introduction of air resistance alters this outcome. Heavier objects, due to their greater density, displace air more effectively and thus land slightly faster than lighter objects when dropped from the same height. This phenomenon, while scientifically valid, often results in negligible differences in landing times.

PREREQUISITES
  • Understanding of Galileo's laws of motion
  • Basic knowledge of air resistance and its effects
  • Familiarity with concepts of density and mass
  • Introductory physics principles related to free fall
NEXT STEPS
  • Research the effects of air resistance on falling objects
  • Study the principles of free fall and gravitational acceleration
  • Explore experiments demonstrating the impact of density on falling speeds
  • Learn about the physics of projectile motion and drag forces
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Students of physics, educators teaching basic mechanics, and anyone interested in the dynamics of falling objects and the influence of air resistance on motion.

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Disclaimer: Dont hurt me, I am not exactly a physics nut or anything, and what I am about to say has probably been figured out, its just that I thought of it, and I never heard anything of it before, soooo...

Problem:If two objects were dropped from a height with the same texture, shape, size, and dropping conditions(this wouldn't be in a vacuum), but with different densities, would they land at the same time.

Probable answer(pounded into our heads by 4th grade science teachers)
Yes, they will land at the same time, prooved by gallileo(sp?)

-MY- answer: no, for the heavyer sphere would break the the inertia of the air better than that of the less dense sphere.

I repeat that most likely this is already known, but no one I asked around here(where I live) got that answer, even my brother who is a freshman at CMU studying physics, so I thought it was a good Idea if he didnt get it.

Erm... Yeah... :rolleyes:

(First Post!)
 
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Welcome to PF.
You are correct, if you include air resistance in the model (that's the "scientific" term), then the heavier ball will land first (it's usually too tiny a difference to measure, though).
Do not use the terminology "break the inertia" about this phenomenon, it is unclear what you mean by it (I made the most favourable interpretation of that term).

However, you do not contradict Galileo, because he was talking only about free fall, i.e-, when air resistance is absent from the model.
 
Sorry :C
when I said "break the Inertia" I meant the fact that the air wasnt moving until the heavyer ball shoved it out of the way. Ah well. I figured as much.

Thank you
 
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