In article , (Harry K) wrote:
Douglas and Rosemarie Miller wrote in message
gy.com...
In article ,
says...
(Chris Lewis) wrote in message
...
According to :
Harry K wrote:
Don't bother, he won't believe you but just to prove it -again- I
just
re-ran the experiment. Bucket weighed 26 lbs this time


scale reads 26 (taa daa!)
I\
I \
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bucket anchor
26 lb

Again he won't believe it and refuses to do the same experiment

You are either lying, or you've tied off the rope to the scale and the
anchor isn't doing anything, or possibly you don't have the scale in
the
right place.

Or he anchored it to the bucket...


Hey, good point!. In practice it doesn't matter if the rope is
attached to an anchor or tied back to the bucket. The result is the
same. No forces are changed and the bucket remains in place. Think
about it.

But it *does* matter. The forces *are* changed, and the result is *not*
the same -- as you would know, if you ever conducted the test that you
keep challenging others to do.

The scale will read 52 lbs assuming it's between the hook and the rope,

and the rope is free to slide such that it needs to be tied off.

Right.


Yep, and that is just how I rigged it, scale from hook to rope and I
eased the rope on the scale several times before reading. Try it
yourself. It will only take you a minute.

If you actually conducted the test, rigged as you show in your diagram
above, then you're lying about the reading on the scale.

Here it is again. You are beginning to have me thinking I am wrong but
my tests prove I am right, and no, I am not lying as anyone can re-do
the test in a minute.

If the tests that you claim to have conducted give the results that you claim
that they do, then you're setting them up wrong *and* describing them wrong
here.

I was wondering if my scale was perhaps not
reading right as it only goes to 25 lbs and my weight prior were near
that so I decreased the weight.

Test one rope over scale hook back to bucket:
SCALE
I
O
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16 Lb weight.

Just bucket = 16 lb
Rope over hook and back to bucket = 16lb

OK, look at the forces involved there. You've suspended a 16-lb weight by two
ropes, each of which *clearly* bears 8 lb of the load. And the scale at the
top reads 16 lb -- CORRECTLY showing that the load in BOTH ropes is exerted
against the top support.


Test 2 - Rope over scale hook angle to anchor and tension eased
several times before reading. Three tries.

SCALE
I
O
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I Anchor
16 LB weight

Readings:
bucket scale
18 21
16 21
16 21

The readings you report are not consistent with your diagram, which shows only
one scale at the top. You purport to have made two force measurements with
only one scale. Nice trick.


I can't explain.
1. Where did the 18 reading come from? Anomalous but there it is and
I reported it.

Operator error.

2. Why 5 lbs more to the anchor? I know the angle changes the force
vector and thus (I assume) the reading some, but I wouldn't think 5
lbs worth. The angle (measured with a bevel gauge and then the saw
angle scale from that is:
40 degree give or take a degree.

Where are you taking this measurement? According to your diagram, you had a
*single* scale at the top. What does *that* scale show?

While doing that I ran another test. Rope was laying in the water
between times so it was now soaked.

bucket 17 scale 21 to 23 depending on how the rope was eased on the
hook.

What does the scale _at_the_top_ show, Harry? That's what we're arguing about.
Nobody cares what the load is in the individual ropes. What's the load at the
top?

Once again the scale is crude but the readings are as I have given
them. Why would I lie? Anyone can repeat the test in a minute or
less.

Then I suggest you do the test: arrange the weight, scale, and anchor as shown
in your diagram above and reproduced he

SCALE
I
O
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I Anchor
16 LB weight

and report what the scale at the top reads.