Projectile motion conceptual problem

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Homework Help Overview

The discussion revolves around a conceptual problem in projectile motion involving two eggs pushed off a desk with different forces. The original poster questions which egg is more likely to break upon impact, considering their equal protective chambers and the forces applied.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between horizontal and vertical forces and their impact on the likelihood of the eggs breaking. The original poster suggests that vertical forces are the primary concern, while others introduce the concept of impulse and momentum.

Discussion Status

The discussion is active, with participants offering different perspectives on the factors influencing the eggs' likelihood of breaking. Some guidance has been provided regarding the impulse-momentum relationship, but no consensus has been reached on the correct reasoning.

Contextual Notes

There is an assumption that the protective chambers do not allow for any movement of the eggs, which may influence the discussion on the forces involved. Additionally, the original poster's father's opinion introduces an alternative viewpoint that is being considered.

raymondlam
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Homework Statement


Two eggs, both housed in equivalent protective chambers, are pushed off a desk to the ground. One is pushed with greater force and travels further, while the other is pushed with less force and does not travel as far horizontally. Which egg is more likely to break? (Assuming the protective chamber perfectly snugly holds the egg so there is no jostling of the egg in the chamber)


Homework Equations


projectile motion, vertical and horizontal components


The Attempt at a Solution


In a situation where both eggs are pushed on a flat surface with no vertical drop, the horizontal force does not contribute to the egg breaking or not. It is the vertical force in the first situation that causes the egg to break. Therefore since the vertical force on both eggs in the first situation are the same, both eggs have the same likelihood of breaking (i.e. either both will break or neither will break) My father thinks otherwise, and that total component impact force is what matters, which is why I am posting this question.
 
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Can someone let me know what is the right answer?
 
Well instead of thinking about projectile motion, I'd think about impulse being the change in momentum Ft=mv-mu and t2>t1, compare Ft1 to Ft2.
 
I see, so

Egg 1
m =a
v1i> v2i
vf = 0
Ft1 = mvf - mv1i
Egg 2
m=a
v2i<v1i
v f = 0
Ft2 = mvf - mv2i

Since abs(Ft1)>abs(Ft2) impulse on the egg with more force horizontally is greater so it is more likely to break.
 

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