Centrifugal Force

[Martin]

http://xkcd.com/c123.html

 

[Regs]

I see.

 

[MrPickins]

You mean centripetal force.
There's no such thing as centrifugal force.

LMAO
I was thinking that exact thing when I clicked the link.

 

[animalia]

I was just about to reply by saying there is no such thing. That is a hilarious comic strip.

 

[bobert]

hehe i remember my physics teacher telling me that centrifugal forcers are fake

 

[Fenixgoon]

10/10 for a bond reference, a physics reference, and a good punchline!:beer:

 

[FP]

This is my all time favorite comic from that site.

 

[edro]

That's a good site and a good comic!

Thanks!

 

[StevenYoo]

hahaha, awesome comic.

totally my type of humor

 

[mobobuff]

Originally posted by: StevenYoo
hahaha, awesome comic.

totally my type of humor

You may enjoy the Facebook group titled, "I Wish I Were Your Derivative So I Could Lie Tangent To Your Curves!" A lot of math jokes and such, with pictures and comics.

 

[TitanDiddly]

Neither centrifugal nor centripital forces exist. There is no force. Bodies in motion want to stay in motion- in a straight line. Consider a child on a merry-go-round, frozen in time. At that moment he is travelling in a direction that is tangent to the circle the merry-go-round is making. If he were to suddenly decouple from the merry-go-round, he would fly off in a straight line. That 'push' that one feels in a car that is rapidly turning is not a force acting upon you- if is your own momentum wanting to go in a different direction than the one the car is insisting that you go in. So the kid on the merry-go-round does not feel a force outward, he feels his own weight pulling himself in a direction that is constantly changing to be tangential with the point that he occupies on the circle as he travels around it. The pull of his momentum is always perpendicularly out from the center of the circle.

 

[mobobuff]

Originally posted by: TitanDiddly
Neither centrifugal nor centripital forces exist. There is no force. Bodies in motion want to stay in motion- in a straight line. Consider a child on a merry-go-round, frozen in time. At that moment he is travelling in a direction that is tangent to the circle the merry-go-round is making. If he were to suddenly decouple from the merry-go-round, he would fly off in a straight line. That 'push' that one feels in a car that is rapidly turning is not a force acting upon you- if is your own momentum wanting to go in a different direction than the one the car is insisting that you go in. So the kid on the merry-go-round does not feel a force outward, he feels his own weight pulling himself in a direction that is constantly changing to be tangential with the point that he occupies on the circle as he travels around it. The pull of his momentum is always perpendicularly out from the center of the circle.

Are you saying momentum isn't a force? Or are we just arguing semantics now?

 

[IronWing]

I like this one.

http://xkcd.com/c21.html

 

[Crono]

Lol. I guess I am qualified to read this strip.

http://xkcd.com/c50.html

 

[Fenixgoon]

Originally posted by: mobobuff

Originally posted by: TitanDiddly
Neither centrifugal nor centripital forces exist. There is no force. Bodies in motion want to stay in motion- in a straight line. Consider a child on a merry-go-round, frozen in time. At that moment he is travelling in a direction that is tangent to the circle the merry-go-round is making. If he were to suddenly decouple from the merry-go-round, he would fly off in a straight line. That 'push' that one feels in a car that is rapidly turning is not a force acting upon you- if is your own momentum wanting to go in a different direction than the one the car is insisting that you go in. So the kid on the merry-go-round does not feel a force outward, he feels his own weight pulling himself in a direction that is constantly changing to be tangential with the point that he occupies on the circle as he travels around it. The pull of his momentum is always perpendicularly out from the center of the circle.

Are you saying momentum isn't a force? Or are we just arguing semantics now?

momentum isn't a force now a change in momentum... that requires a force

 

[Howard]

LOL

Originally posted by: TitanDiddly

Huh? In order for a body to move in a circle, there must be a radial acceleration. Acceleration comes from force. How can it not exist? If centripetal force didn't exist, things would indeed fly off in straight lines.

 

[RaynorWolfcastle]

haha, classic

 

[TitanDiddly]

Originally posted by: Howard
LOL

Originally posted by: TitanDiddly

Huh? In order for a body to move in a circle, there must be a radial acceleration. Acceleration comes from force. How can it not exist? If centripetal force didn't exist, things would indeed fly off in straight lines.

The force keeping the body on the rotating object is a normal force- a seat, a chain, whatever. It is pushing you away from your normal path- a straight line. Similar to if you were walking in a straight line, and someone shoved you off to the side. They shoved you with a force, moving you. You shoved back exactly as hard, your momentum being the source of that force. You are correct in calling it an acceleration. Your acceleration(assuming constant angular velocity) is constantly directly towards the center of rotation.

 

[Howard]

Originally posted by: TitanDiddly

Originally posted by: Howard
LOL

Originally posted by: TitanDiddly

Huh? In order for a body to move in a circle, there must be a radial acceleration. Acceleration comes from force. How can it not exist? If centripetal force didn't exist, things would indeed fly off in straight lines.

The force keeping the body on the rotating object is a normal force- a seat, a chain, whatever. It is pushing you away from your normal path- a straight line. Similar to if you were walking in a straight line, and someone shoved you off to the side. They shoved you with a force, moving you. You shoved back exactly as hard, your momentum being the source of that force. You are correct in calling it an acceleration. Your acceleration(assuming constant angular velocity) is constantly directly towards the center of rotation.

So why doesn't centripetal force exist, again?

 

[JujuFish]

Originally posted by: TitanDiddly
Neither centrifugal nor centripital forces exist.

You need to go back to Physics 101.

 

[Scarpozzi]

Originally posted by: Howard

Originally posted by: TitanDiddly

Originally posted by: Howard
LOL

Originally posted by: TitanDiddly

Huh? In order for a body to move in a circle, there must be a radial acceleration. Acceleration comes from force. How can it not exist? If centripetal force didn't exist, things would indeed fly off in straight lines.

The force keeping the body on the rotating object is a normal force- a seat, a chain, whatever. It is pushing you away from your normal path- a straight line. Similar to if you were walking in a straight line, and someone shoved you off to the side. They shoved you with a force, moving you. You shoved back exactly as hard, your momentum being the source of that force. You are correct in calling it an acceleration. Your acceleration(assuming constant angular velocity) is constantly directly towards the center of rotation.

So why doesn't centripetal force exist, again?

I wouldn't know...I was out on the town with a bunch of WOMEN when these guys were reading about it.

 

[FoBoT]

:laugh:

this one is about ATOT

http://xkcd.com/c202.html

:laugh:

 

[silverpig]

Originally posted by: TitanDiddly

Originally posted by: Howard
LOL

Originally posted by: TitanDiddly

Huh? In order for a body to move in a circle, there must be a radial acceleration. Acceleration comes from force. How can it not exist? If centripetal force didn't exist, things would indeed fly off in straight lines.

The force keeping the body on the rotating object is a normal force- a seat, a chain, whatever. It is pushing you away from your normal path- a straight line. Similar to if you were walking in a straight line, and someone shoved you off to the side. They shoved you with a force, moving you. You shoved back exactly as hard, your momentum being the source of that force. You are correct in calling it an acceleration. Your acceleration(assuming constant angular velocity) is constantly directly towards the center of rotation.

Gravity much? Coulomb force?

 

[Shawn]

Originally posted by: FoBoT
:laugh:

this one is about ATOT

http://xkcd.com/c202.html

:laugh:

ahahahahaha

 

[Fenixgoon]

Originally posted by: Howard

Originally posted by: TitanDiddly

Originally posted by: Howard
LOL

Originally posted by: TitanDiddly

Huh? In order for a body to move in a circle, there must be a radial acceleration. Acceleration comes from force. How can it not exist? If centripetal force didn't exist, things would indeed fly off in straight lines.

The force keeping the body on the rotating object is a normal force- a seat, a chain, whatever. It is pushing you away from your normal path- a straight line. Similar to if you were walking in a straight line, and someone shoved you off to the side. They shoved you with a force, moving you. You shoved back exactly as hard, your momentum being the source of that force. You are correct in calling it an acceleration. Your acceleration(assuming constant angular velocity) is constantly directly towards the center of rotation.

So why doesn't centripetal force exist, again?

it's centrifugal that doesn't exist.

centripetal does.. say a ball is tied to a string, and you're swinging it around in a circle (at a constant velocity). because velocity is a vector, having both a magnitude and direction, a change in either denotes a change in velocity, and therefore, an acceleration. in this case, the direction is constantly changing. the direction of this acceleration is always perpendicular to the tangential acceleration and pointed towards the center of the system (your hand, in this case). hence centripetal, or "center seeking" force/acceleration