hi guys my name is Josh and you are watching my DIY channel videoeppo.
Now all of you know that this is a weight balance its a very simple device we use in
our everyday life.so the weight goes on one side, and then you add your commodities on
the other side.It's going to take a while, hang on with me a bit, okay, now when you
strike a balance, you have your deal.
But my question is, will this device work I have to cut one side of this balance off.now
can you get this to work?
Answer to that question is going to come right after this intro!keep watching.
Welcome back everybody, today we have so many different kind of scale balance and you can
see a wide variety of them in the market places.In fact,
you get small scales like this thatis used in the kitchen and these are called kitchen scales and I have one for my personal
use as well.No coming back to our question, will this gadget working I had to remove one
side of this balance?
The answer is yes but it would need some tweaking!
The inspiration comes from a vegetable vendorand I shot this clip over a year ago please have a look at it
Can you weight something?
how many kilos is this? it's a quarter kilo!
Now, this small vegetable vendor could have used a spring balance or a regular balance
for that matter but his idea was different and that peculiarity caught my attention.
How does he do it?it because of the center of gravity! and I think now it's time to play
with some fork and a glass.
Grab a set of forks and interlock its fangs facing each other.
It should lock firmly but if it doesn’t don’t hesitate to drop a dab of superglue
in there.
Then a toothpick can be inserted in between one of the fangs.
Now this arrangement can be balanced on a glass edge, by placing the toothpick on the glass.
It definitely works!
But be patient till you get it right.
Note that the forks are oddly arranged but the centre of gravity is on the tooth pick
at a certain point.
Once it is balanced ,You can go ahead and burn the rest of the tooth pick, and surprisingly,
it would only burn till the point that is resting on the glass.
You can see it here clearly.
Now this could be shifted anywhere you like and it's going to stay balanced at this point.
This was a quick example of, knowing and understanding the center of gravity, now to get back to
our project, we need a dowel one inch in thickness.
This is a part of a kitchen mop, and I am sure you can find one too.
For the record, I am weighing it and its close to 80 grams.
Let’s first tie the pan, to one end of this dowel.
Then let’s loop a thread, which needs to be tied to the dowel.This will act as a fulcrum.
This is a simple knot, which could be loosened when required and slid on the dowel.
you can now see that the weight is on this side so what we can do is, shift the fulcrum
towards the weight, now good so far... now it too heavy on this side... there is going
to be a bit of push and pull but we shall get there!
we are almost there and a little bit of tweaking should do.
this is not going to be very perfect but,..we have it..
I am scoring a small grove on the dowel for the loops to sit comfortably .
now you can see that even without the other side of balance if we rearrange the pivot
point , the system is able to balance itself.Now the task is to add some weight and keep shifting
this center point and see if this works.
I began by measuring 100 grams of rice.
I am going with the increments of 100 grams.
Once we have our 100 grams, we can place this on the pan and then try to balance it again.
By repeating the previous process, and shifting the pivot, we get the system to balance.
The idea here is to get the dowel parallel to the ground.
Then the weight was increased to 200 grams and balanced again.
The point of pivot was marked I repeated the process all the way up to 500
grams, ie half a kilo, And it worked.
When I googled for this kind of balance ,I learnt that these kind of balance are called
Steelyard balance, I might need to do a lit bit of more learning on that.
In the steelyard balance, the fulcrum doesn't move.but we are actually moving the fulcrum point,
from one place to another.That is the one difference between the steelyard balance
and the balance we have made here.
With each increment of 100 grams I kept marking on the dowel.
And now this is all set to be used as a weight balance.
It might not be accurate but gets the job done.
I am not saying that this system is not accurate but with this system,
you can measure from 100 grams to 500 grams on the increments of 100 grams.
This is a hack and in India we call it as JUGAAD and I am happy to learn this jugaad
from a vegetable vendor who actually taught some concepts of physics,
I really thank him for being the inspiration behind this video.
I hope you liked this video, I will be back with another intersting one next week.
Until Then , Bye