Energy lost by speeding car while drinving on a soft surface

AI Thread Summary
A car weighing 1000kg traveling at 30mph will lose energy when it sinks into a soft surface, primarily due to the deformation of that material. The exact amount of energy lost depends on the properties of the material, which need to be specified for precise calculations. The discussion emphasizes the importance of understanding material characteristics to determine energy loss accurately. Conducting experiments with various materials, such as rubber mats, can help identify which causes the least energy loss. Overall, the energy lost is comparable to rolling resistance experienced with tires.
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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