The Lee-Tseung Lead Out Theory

[ltseung888]

Although "abashing" Tseung may not be nice, it is the result of frustration
brought about by Tseungs own continued refusal to explain his "theories"
in proper scientific terms.

Dear Koen1,

Please comment on Slide 10 only.  I am taking tiny steps in the explanation this time.  ramset is hoping that you can explain the theory to him afterwards.

It will be a challenge for both of us.

[Koen1]

Why don't you answer Tinu first?
Your confusing kilograms with newtons was only one mistake...

His post, as quoted by Shruggedatlas, is a lot more
interesting than your slide 10.

After you have answered Tinu properly,
maybe we can talk about your strange assumption that
the input of a pendulum does not come from the
initial "pull" (by the operator) on the pendulum,
but instead it comes from gravity... 
(As you said yourself in your post 1822

[ltseung888]

Why don't you answer Tinu first?
Your confusing kilograms with newtons was only one mistake...

His post, as quoted by Shruggedatlas, is a lot more
interesting than your slide 10.

After you have answered Tinu properly,
maybe we can talk about your strange assumption that
the input of a pendulum does not come from the
initial "pull" (by the operator) on the pendulum,
but instead it comes from gravity... 
(As you said yourself in your post 1822

Dear Koen1,

I have learned to focus on one question at a time.  The Tinu questions belong to Slides 11 and/or 12.  Let us focus on Slide 10 first and not confuse the issue.

@Tinu,  Please comment on slide 10.  Thank you for your correction.  Do you agree that it is totally correct  in both Physics and Mathematics?

[ltseung888]

Slide 10 is an easy one.

Force = mass x Gravity

Spring energy in the string is equal to the force causing it, so Tension must also be 60 units of force at rest.

The ball is mass (string is massless for the sake of ease of computation), Gravity is exerted from top to bottom in the slide. Gravity pulls the ball until an equal force is achieved (tension in the string). At this time, Tension in the string is the balance to the force of the ball (mG), so must be exerting a pull force of 60 to the ball (balancing the 60 units of force exerted by weight). Total energy calculated at any point in the pendulum at rest, is 60 units of force. Force acting on the ball (mG) is converted into spring energy (stretch/pull) in the string until the pendulum is given kinetic energy.

Is that correct?

I am not well educated, but am fairly comfortable with lessons on things I do not currently understand.

Dear SeanTheLight,

From the point of a layman, your understanding is very reasonable.

To be more correct (as demanded by Tinu or other physicists), the following points should be noted:
(1)   Force = Mass x Acceleration
(2)   Weight = Gravitational Force = Mass x Gravitational Constant
(3)   Gravitational Constant (g) = 9.8 meters/sec/sec approximately on Earth Surface
(4)   The pendulum at rest has no kinetic energy
(5)   In Slide 10, we focus only on the forces.  We have not discussed energy yet.

[Top Gun]

There is no such thing as a Force of 10kg... If you want to be intelligible, at least say F=10Kgf.

I do agree that the unit of Mass is kg.  The unit of Force is Newton.  However, we normally say that the gravitational force on the pendulum bob is equal to its weight.  In such a statement, weight is assumed to be a force.

If I ask you, how much do you weight?  The most probable answer is, say, 70 kg.  This is the normal layman answer.  However, weight is regarded as a force in the previous paragraph.  Thus the layman answer of I weigh 70 Kg is incorrect in Physics.  The correct answer in Physics should be - my mass is 70 kg.  (You will be stared at as a fool if you provide that answer!)

Almost any trained Physicist knows this common incorrect or inexact or confusing use of weight as a force and expressing it as kg.  I do not see it as a mistake major enough to discredit the entire Tseung postings.

However, I agree with TInu that when we present Physics, we should be more exact.  The new Slide corrected the mistake via the use of "unit of force".  I do not think that there is confusion any more.