Monday, May 24, 2010

What kind of friction is it when a fish swims through water??

a.static friction


b.sliding friction


c.rolling friction


d.fluid friction

What kind of friction is it when a fish swims through water??
Process of elimination -





Static friction is what keeps your chair and desk from sliding around the room.





Sliding friction is what makes you have to keep pushing when you move your desk. It's less than the push you had to use to get the desk moving though.





Rolling friction - would be how much push you had to use if your desk was on wheels - less again than the other 2





Fluid friction would apply if your desk was floating in a swimming pool and you were pushing it through the water.





So which one sounds like it would apply to fish? ;-)





Ian
Reply:would it be fluid friction?
Reply:It would probably be fluid friction, but I don't think it is actually a type of friction. Or they are using kinetic energy which is the energy of movement. Sliding friction and rolling friction would most likely be the same as static friction, as static friction is caused from 2 objects being rubbed against each other.
Reply:Fluid friction is the friction between a solid object as it moves through a liquid or a gas. The drag of air on an airplane or of water on a swimmer are two examples of fluid friction.


http://en.wikipedia.org/wiki/Friction
Reply:why are you asking this?


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