levers and 6-A-2

[dlam]

Homer describes only class 3 type lever is used in the golf stroke.
Why can't class 1 type lever be used in the golf swing? Class 1 makes as much mechanical sense as class 3.

[Daryl]

First Class Lever = See-Saw
Second Class Lever = Wheelbarrow
Third Class Lever = Flail, or a Hammer when driving a nail.

[dlam]

oars in row boats are class one.....You put effort in the oar there's a fulcrum in between and the load is moved.
A golf stroke/swing doesn't have to be only class three lever system all the time.

[BerntR]

How do you want to use a class 1 lever in the golf stroke dlam?

[airair]

How do you want to use a class 1 lever in the golf stroke dlam?

Is it possible to regard the shoulder rotation in the backstroke as a merry-go-round (flat) and the shoulder movement in the downstroke more as a seesaw? (Right shoulder down)

[BerntR]

Yes I would think so. And it's pretty close to Homer's prescription too.

I think there are good patterns out there that think "flat" in the downstroke as well but flat in the backstroke isn't disputed as far as I know. It's basically how you create a turn instead of a tilt IMO.

[dlam]

Correct me if I'm wrong, but Homer prescribes a fulcrum, force then load in that order in the lever. The lever being either the clubshaft (secondary assembly) or the clubshaft and left arm(primary assembly).
For a class III the fulcrum is always higher then the input effort.
For the primary assembly the fulcrum is the left shoulder and the force is primarly the right arm.
Fo the secondary assembly the fulcrum is the left wrist or thumb and the force is the right arm.
All I am saying is why can't the fulcrum be the hands and the force be the shoulders or the pivot?

[Daryl]

The "Fulcrum" is the 'Pivot point' of the Lever.

1. Left Shoulder
2. Left Wrist

"Forces" would be (Force against a Lever is where it's applied, not where it originated)

1. Left Hand
2. Right Hand
3. Left Arm (Centrifugal, Blast-Off the Chest)

"Weight" would be

1. Golf Club
2. Clubhead

This is really interesting stuff because we can generate force from multiple sources and we can change the length of the Lever and control the input-output of the Force.

For Swingers, we're concerned with acquiring and applying force to move the Primary Lever and use CF to move the Secondary Lever. The Primary Lever is a very long Lever and it takes a lot of force and much more force as the Golfclub gets longer.

[dlam]

The "Fulcrum" is the 'Pivot point' of the Lever.

1. Left Shoulder
2. Left Wrist

"Forces" would be (Force against a Lever is where it's applied, not where it originated)

1. Left Hand
2. Right Hand
3. Left Arm (Centrifugal, Blast-Off the Chest)

"Weight" would be

1. Golf Club
2. Clubhead

This is really interesting stuff because we can generate force from multiple sources and we can change the length of the Lever and control the input-output of the Force.

For Swingers, we're concerned with acquiring and applying force to move the Primary Lever and use CF to move the Secondary Lever. The Primary Lever is a very long Lever and it takes a lot of force and much more force as the Golfclub gets longer.

I really like to use golf club as the weight....but then if we use this is the load(weight) then what is the lever? The left arm by itself or can it be the top part of the shaft + left arm?

If will use the left arm by itself as the lever then the pivot can be the force......the left shoulder is the fulcrum and the pivot is connected to the left shoulder.


If you use the concept of the top part of the clubshaft and left arm as the lever then the right hand or left hand can be used as the source of force.

There's an argument that can made that LEFT ARM BY ITSELF can be the lever.

[Daryl]

The Lever uses a pivot point to multiply the force that can be applied to move a load. This is mechanical advantage. A form 1 Lever can move heavy loads with less effort, while a Form 3 Lever can move a Load faster than normal. You can swing a Clubhead faster than you can throw it.

I think that you can view the "counterweight trebuchet" as a dual lever: Form 1 and Form 3 while a Crowbar is Form 1 only.

The Golf Swing is dual Form 3. We don't have a choice. We also don't have much of a choice determining where the Force is Applied but we have more options in determining the source of the Force.