Energy lost by speeding car while drinving on a soft surface

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Homework Help Overview

The discussion revolves around the energy lost by a car while driving on a soft surface, specifically focusing on the scenario where the car sinks into the material. The subject area includes concepts of energy, material deformation, and possibly rolling resistance.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between the energy required to maintain speed and the deformation of the soft material. Questions arise regarding the specific properties of the material and how they affect energy loss.

Discussion Status

Some participants have offered insights into the nature of energy loss related to material deformation and suggested the need for more information about the material in question. There is an interest in experimenting with different materials to determine which one results in the least energy loss.

Contextual Notes

The original poster has not specified a particular material for testing, indicating a desire to explore various options. The discussion hints at practical experimentation, which may influence the outcomes discussed.

emusheyev
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energy lost by speeding car while drinving on a soft surface
how much more energy does a car need to continue driving at a constant speed if it sinks 1cm into a soft material.


car weight 1000kg
car speed 30mph
friction is neglected
 
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Welcome to PF!

Hi emusheyev! Welcome to PF! :wink:
emusheyev said:
how much more energy does a car need to continue driving at a constant speed if it sinks 1cm into a soft material.

Well, the energy lost goes into deforming the material (rather like rolling resistance, which is mostly the energy lost in deforming the tyres).

We need to know a lot more about the material to answer the question.

Did you have a specific material in mind? :smile:
 
i have no material in mind
but i would like to test with different materials to find which one causes the least energy loss
 
You're going to do the experiment yourself? Sounds interesting =)

Rubber mats ought to be suitable I think, they're pretty common, and have varying degrees of "softness".
 

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