I have To Create my Own World W/O Friction HELP

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In summary: They also have a magnetic field that can be used to stop the vehicle or change direction of the propeller.The Clothing: There is no clothing in this world as there is no friction. The food: Food in this world can be consumed at any time without the fear of it coming in contact with other foods. It can also be consumed in any form that the creature desires.
  • #1
PacersRule07
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I have To Create my Own World W/O Friction! HELP!

Ok here's the deal:

Quote:

You have learned just about enough physics at this point to play god. You will now create your own world. Unfortunately, you are a lesser god and forgot one fairly basic element. Your world does not have friction. Describe your planet and its inhabitants, ie How did they evolve over time as creatures w/o friction. Explain how they move, what they look like, the structure of their homes and other buildings. Do they have hair, what clothes and food. Be very specific. Create and name your planet and inhabitants, they don't have to be humanoid and probably wouldn't be.

Note: Earth was already created, do not use Earth in the future.

For Extra Credit: Draw your creatures



I really am stumped on this, I don't see how something could stop w/o friction. I was thinking about having creatures that would fly but I don't know how they'd stop. Any help would be appreciated
 
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  • #2
A world without friction...Well...If I had to do this beastly sounding assigment, I would say my "world" is one never ending movement. The planet always moves at very high speeds and my "creatures" would "fly" at extremely high speed due to no air resistance.

Clothing: it can really be anything (no friction=no essentially no size restrictions of clothing)
food: I would say something like "food for my creatures is never clumped and always free of contact with other foods(something like that)

These are some suggestions. In general, no friction means no slowing down and thus, very high, continuous speeds. Domestical ideas are a little harder, but supply the following concept (or lack of the following concept) and be creative. Hope you do well with this beastly assignment.
 
  • #3
PacersRule07 said:
I really am stumped on this, I don't see how something could stop w/o friction. I was thinking about having creatures that would fly but I don't know how they'd stop. Any help would be appreciated

It sounds like you're on the right track. See if you can come up with some mechanisms -- say, involving impacts, rubber bands or magnets, rather than friction -- by which their cars could stop.

- Warren
 
  • #4
well, the creatures cannot walk...how about some sort of jet propulsion, much like a squid uses jet-like propulsion to propel through the water? These creatures could have some sort of biological propeller mechanism. The creatures could SLIDE across frictionless the surface of the planet, while being propelled by a series of props. One prop to propel the creature forward, a rudder to turn, and a prop in the front to allow for braking.

of course for a propeller to work, you'd need air, and therefore you'd have air resistance, but you'd have to claim that there is no air resistance, somehow.
 
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  • #5
Here's what I make of it...

The fundamental force responsible for friction is the electromagnetic force. As two objects come very close together, the electrostatic repulsion btw molecules and atomes (which varies approximately as [itex]1/r^n[/itex] for some power n) becomes very large and the force is felt. If you try to "slide" two object together, the irregularities in the surfaces interact together electromagnetically and this is friction.

So without the electromagnetic force, there is no friction. But without E&M, there is also no cohesion of matter and hence no life, and hence supressing E&M is not what your instructor had in mind. The so called lesser god is actually pretty talented imo. He can supress friction but not E-M. So let's assumed He can do that but our infrerior intellects are too restricted to comprehend how He does it.

I'm not going to do the work for you but I recomment that you just think about things that we do/have and ask if it would still work/exist in a frictionless world. For instance, could we walk? Could the stone age people have made fire? Could they have carved arrows out of stones? etc.
 
  • #6
there is no material that is frictionless becuase it is impossible to get to absol zero temp hence no surface is perfect,

it would break so many laws that this world would definately be totally different in every respect.

but i think your teacher was just trying to get you to think about ways you could overcome no friction.
 
  • #7
Thanks for the help guys.
 
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  • #8
Here are some ideas I've come up with:

The creatures are capable of flying...fly like humming birds than other birds...allows them to hang in the air. They have gigantic ears that they flip us when they want to stop...acting as a horizontal parachute to help them slow down due to air resistance. They are always moving

The vehicles they drive in have many advanced features. They have a rotating jet properler/burner thing that can rotate 360 degrees and in any direction at the bottom of the vehicle to propel the creatures in the direction they want to go. They also have a helicopter propeler on the top that allows them to hang in the air.

The trouble I'm having is:

I want to use the magnets...and the polarity of magnets such as attraction and repulsion...is there anyway I could explain how I would alter a such magnet to either attract or repel another magnet according to where the said creature wants to go in relation to the other magnets throughout this world. (if that makes sense)
 
  • #9
I think you guys missed it. The "lungfish" step of evolution would have not been possible without friction to slither up on land. The world of this assignment would have to all be in the oceans.

On second thought, I guess that this world is created by the lesser god, so evolution might not be a limitation after all. Hmmmm.
 
  • #10
PacersRule07 said:
I want to use the magnets...and the polarity of magnets such as attraction and repulsion...is there anyway I could explain how I would alter a such magnet to either attract or repel another magnet according to where the said creature wants to go in relation to the other magnets throughout this world. (if that makes sense)
Simply with electricity, you could adjust the polarity of the magnet in your car.
 
  • #11
What should I have these suckers eat? I know it needs to be something with a lot of carbs and that is easily accessible...but am I going to have to come up with my own creature or what? Plants won't work because they use friction in their root structure right?

I was going to have them eat with a trunk purely using an air tube that sucks up stuff like a vacuum w/o friction.
 
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  • #12
PacersRule07 said:
What should I have these suckers eat? I know it needs to be something with a lot of carbs and that is easily accessible...but am I going to have to come up with my own creature or what? Plants won't work because they use friction in their root structure right?

I was going to have them eat with a trunk purely using an air tube that sucks up stuff like a vacuum w/o friction.
Fish. But they have to dive in and bite them, since they can't catch them without friction. Well, I guess you could catch them in a basket or something...
 
  • #13
Would a vacuum tube wor if the air suction was very strong? Or does that use friction?

I'm also going to say that this world has only 2/3's the gravitational pull of Earth allowing objects to become suspended.
 
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Related to I have To Create my Own World W/O Friction HELP

1. What is friction and why do I need to create a world without it?

Friction is a force that opposes motion between two surfaces that are in contact. It can make it difficult to move objects or cause wear and tear on surfaces. Creating a world without friction can eliminate these issues and create a smoother environment.

2. How can I create a world without friction?

There are a few ways to create a world without friction. One way is to use a low-friction material, such as Teflon, on surfaces that come into contact with one another. Another way is to reduce the weight of objects, as friction is directly related to the weight of an object. You can also use magnets or air cushions to reduce friction between surfaces.

3. What are the benefits of a world without friction?

A world without friction can have several benefits. It can make it easier to move objects, reduce the amount of energy needed to perform tasks, and decrease wear and tear on surfaces. It can also create a more efficient and smoother environment for transportation or machinery.

4. Are there any disadvantages to creating a world without friction?

While creating a world without friction can have many benefits, it also has some disadvantages. For example, without friction, it can be difficult to keep objects in place or to control their movement. This can be problematic in situations where precision and control are necessary.

5. How can I apply the concept of a world without friction in real life?

The concept of a world without friction can be applied in many real-life situations. For example, low-friction materials can be used in manufacturing to reduce wear and tear on machinery. In sports, athletes may use low-friction materials in their equipment to increase speed and efficiency. In transportation, air cushions or magnetic levitation can be used to reduce friction and increase efficiency.

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