Obedient wives club: Good sex to keep hubby happy, curb social ills

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Permalink Reply by dr kellie on June 7, 2011 at 11:49am

You are correct, Joseph P.  TByte, the pendulum has potential energy due to gravity.  Look at the formula for pendulum period.  Your knowledge of metaphor may be intact, but your physics seem to be slacking.

Permalink Reply by Joseph P on June 7, 2011 at 10:42pm

Yes, gravity does NOT cause a pendulum to settle at the center.  Friction, vibration, and other wastage of energy within the machine (if a pendulum can be considered a basic machine), cause it to eventually settle at the center.

 

And personally, I was mostly hitting him on his abuse of metaphor, Dr. Kellie.  :-D

Permalink Reply by TByte on June 8, 2011 at 8:56pm

The question is whether the swing is caused by gravity.  It is not.

You can have pendulums and oscillation without the assistance of gravity.  Magnets, for instance.

And even in a normal pendulum, the gravity does not cause the "swing".  In the absence of other forces and physical principles, gravity would cause the pendulum to settle at the center immediately.  It is inertia that causes it to regain its potential energy and "swing" back again.

Dr. kellie, and don't know what you are a doctor of (if anything) but it is not physics.  Best let this one go.

Permalink Reply by Joseph P on June 9, 2011 at 5:24pm

"Settle" is an active verb.  If something isn't moving in the first place, it can't settle.  When you say that a pendulum is settling at the bottom of the swing, you're saying that it's coming to a rest from a previously existing oscillation.

Gravity does not cause this.  Gravity is what causes there to be potential energy to take action, when someone or something releases the pendulum at the top of its arc, and at that point it just oscillates between a state of potential and kinetic energy, enforced by gravity.

If you had a perfect, frictionless machine with no wastage of energy, gravity would keep the pendulum going in perpetuity, and it would never settle.

The same would apply to a pendulum enforced by magnetism.  Gravity doesn't make those settle, either.  It's the energy lost to friction and other mechanical wastage.

Your metaphor sucks.  Face up to it and move on.

Permalink Reply by TByte on June 9, 2011 at 10:29pm

A pendulum is the result of an oscilating exchange of potential energy and kinetic energy.It is possible to have an oscilating pendulum without the influence of gravity at all.  Magnets can suffice, as can springs, and even a continuously flowing fluid.
Imagine a pendulum at rest.  Gravity is present, but there is no swing.
Therefore, if gravity is neither necessary for the operation of all pendulums, or sufficient for the operation of any pendulum, how can you claim that pendulums work by gravity?

And by the way, Joseph....stop derailing my thread, you troll!

Permalink Reply by Dustin Williams on June 9, 2011 at 10:43pm

Can we at least all agree that pendulums require some outside force.

Permalink Reply by TByte on June 9, 2011 at 10:59pm

Not only do we agree, but I am going to start an Atheist Pendulum group on the forum, and invite you to become a member!

Permalink Reply by Joseph P on June 9, 2011 at 11:52pm

A pendulum is the result of an oscilating exchange of potential energy and kinetic energy.It is possible to have an oscilating pendulum without the influence of gravity at all.  Magnets can suffice, as can springs, and even a continuously flowing fluid.
Imagine a pendulum at rest.  Gravity is present, but there is no swing.

And as soon as the pendulum gets a nudge from any direction, gravity keeps it in motion.  Gravity doesn't cause any settling.  It doesn't initiate the swing, but it's what makes the pendulum swing what we know it to be.  It's what makes a pendulum act like a pendulum.  We've been over this.

Springs and a continually flowing fluid don't fill the same function as gravity.  They represent an input of energy into the system.

 

Therefore, if gravity is neither necessary for the operation of all pendulums, or sufficient for the operation of any pendulum, how can you claim that pendulums work by gravity?

Easy, gravity is the force that perpetuates the motion of the pendulum.  So, as gravity, you're perpetuating the way that the system swings back and forth from one extreme to the other.

In other words, as gravity, you're not contributing to the neutral position which you claim.  So, maybe that is a good metaphor for what you're actually accomplishing.  If you wish to accept that, then fine.

 

And by the way, Joseph....stop derailing my thread, you troll!

I find this discussion far more amusing than the rest of the nonsense.  You're acting like a Muslim, deliberately going out of your way to find things to be offended at, and you're being obtuse.  End of discussion.  It's not very interesting.

Permalink Reply by TByte on June 10, 2011 at 12:19am

Its a fine metaphor.

Like gravity, I am trying to return things to a neutral and equitable position, in contrast to feminists and chauvinists who keeps pushing the system to one side or the other.

That simple.

Permalink Reply by Joseph P on June 10, 2011 at 12:30am

Wow, could you be more blind?  Gravity does NOT return the pendulum to rest at the midpoint.  Gravity ensures that at the time the pendulum passes the midpoint, it's traveling past it at the maximum speed.  Gravity is the perpetuating force in the operation of a pendulum.  If you don't understand this, then you understand shit about physics.  You're being a complete buffoon.

This is basic, first-year high-school physics.  If you're that ignorant of the subject matter, we can't have a discussion until you go back and learn a lot more.

Permalink Reply by TByte on June 10, 2011 at 12:39am

Oh, Joseph.  It is so disappointing to see you pushing this.  I'd thought more highly of you.  Unfortunately, you are just plain wrong here.

Physics according to Joseph:

Gravity does NOT return the pendulum to rest at the midpoint.

Physics according to the Wikipedia article on the Pendulum:

When a pendulum is displaced from its resting equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position.

Gravity attempts to bring the system to equilibrium, just as Wikipedia states.  Inertia causes it to move past equilibrium and regain potential energy.  Gravity supplies ABSOLUTELY NO ENERGY TO THE SYSTEM.  PERIOD.  END OF STORY.

Its time to stop now, Joseph, unless you intend to vandalize wikipedia.

Permalink Reply by Joseph P on June 10, 2011 at 1:05am

Wow, you're just as bad at reading that Wikipedia article as you have been at reading everything else in this thread.  Your ignorance of physics is shown by your inability to fill in what Wikipedia is leaving out.

You really don't understand what equilibrium means, do you?  A perpetual oscillation is one form of equilibrium.  Equilibrium does not exclusively equal a resting state at the bottom of the arc.

You've also missed a lot of the precise wording in that article, and more to the point, you've missed where words are missing.  Gravity accelerates the pendulum back to its resting equilibrium position.  If you understood more about the subject matter, you'd see where the Wikipedia article oversimplifies several points.  A few minutes spent reading on Wikipedia doesn't equal a few years of high school and college classes on the subject.

You also badly misinterpreted/misrepresented what I said earlier.  I said that a spring and a continually flowing fluid represent energy injected into the system.  I specifically left gravity out of that statement, because it's not.  Gravity is just the force which keeps the system moving in perpetuity, without the input of friction, which is energy (negative energy) inserted-into/transformed-within the system.

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