Egg Drop Device Acceleration Question

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Homework Help Overview

The discussion revolves around a physics project involving the design of a device to protect an egg from breaking when dropped from a height. The focus is on understanding the acceleration of the device in relation to gravitational acceleration.

Discussion Character

  • Conceptual clarification, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the forces acting on a falling object, particularly questioning the role of air resistance and how it affects acceleration. There is an inquiry into why the device should accelerate slower than gravitational acceleration.

Discussion Status

The discussion is active, with participants raising questions about the physical principles involved, such as Newton's second law and the effects of air resistance. Some guidance has been offered regarding the forces at play, but no consensus has been reached on the implications for the egg drop device.

Contextual Notes

Participants are considering the implications of air resistance on free fall and the definitions of forces involved in the scenario, which may affect their understanding of the problem.

Squiller
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In science we had to build a device which, when dropped 3 stories onto cement, should not allow an egg inside inside of it to crack. One of the follow up questions says : Why should your device accelerate slightly slower than the gravitational acceleration of 9.8 m/s/s " - I can't understand why this would be ? Please help :biggrin:
 
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What other force is acting on an object falling through the air?
 
other forces are the air resistance and the gravitational pull, but why would an object travel less then 9.8 m/s/s if its in freefall ?
 
Do the forces analysis

Using Newton's 2nd law

[tex]\sum_{i=1}^{n} \vec{F}_{i} = m \vec{a}[/tex]

We get (where R is air drag the resistive force)

[tex]m \vec{g} + \vec{R} = m \vec{a}[/tex]
 
Remember, too - if the object is experiencing air resistance, it isn't truly in free fall.
 

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