Energy consumption for n times x/n mass function?

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Discussion Overview

The discussion revolves around the energy consumption of multiple smaller objects compared to a single larger object of the same total mass, specifically in the context of vehicles. Participants explore whether there is a known ratio or function that describes this relationship and the implications of Newton's second law.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions if multiple smaller objects consume more energy to move than one larger object of the same mass and seeks a known ratio or function.
  • Another participant references Newton's second law (f=ma) to suggest a straightforward answer to the energy consumption question.
  • A participant inquires whether the fuel consumption of a car can be equated between a single x-kg car and two x/2-kg cars, suggesting a potential transfer of the initial inquiry into a practical scenario.
  • In response, a participant argues that the relationship is not straightforward due to factors like friction and the fixed number of tires, indicating that simple physics does not suffice and that it becomes an engineering question.

Areas of Agreement / Disagreement

Participants express differing views on whether the energy consumption can be directly compared between multiple smaller objects and a single larger object, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants acknowledge that factors such as friction and engineering considerations complicate the relationship between mass and energy consumption, suggesting that assumptions about simple physics may not hold in practical scenarios.

Mikica Ludja
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Or simpler:
Do multiple smaller objects consume more energy to move than one larger (same mass)?
And is there a known ratio/function?

Thanks
 
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Newton's second law says f=ma. So what do you think the answer is?

:welcome:
 
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Thanks for the answer.

Can i safely transfer that into a fact that a x-kg car has same fuel consumption as two x/2-kg cars? Or is that an engineering question?
 
Mikica Ludja said:
Thanks for the answer.

Can i safely transfer that into a fact that a x-kg car has same fuel consumption as two x/2-kg cars? Or is that an engineering question?

No.. Cars are dominated by friction. They use gas even when not moving no matter what they weigh. They have four tires no matter what they way.

For cars, simple physics is not enough, it is an engineering question.
 
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Wanted to check some basics first.

Thanks :)
 

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