It is a granite ball with a diameter of 150 cm that floats on a thin layer of water and even a child can turn it
The ball, which came from China to the Bloomfield Jerusalem Science Museum, was lifted by a huge crane and placed in the entrance square to the museum in a sunken basin built especially for it. Along with the ball, the base of the ball (which weighs 7 tons) and large covering stones that will be placed around it and will create the impression as if the ball is "bursting" out of the ground, came from China.
The ball and its surroundings are outside the Science Museum, in its entrance plaza, and will be open and accessible to the public starting in mid-January. The giant stone ball is a donation to upgrade the entrance plaza of the museum by the Jerusalem Foundation and Betty Gidwitz of Chicago.
9 תגובות
Because water is incompressible and has no option
Exit is possible.
To Haim and Rafig - the experts: This ball will not float on water. I am willing to bet on it - So what is the discussion about?
Haim,
Every body floating in water displaces a volume of water (in cubic meters) exactly, exactly as much as its weight (in grams).
A body submerged in water displaces a volume of water equal to its volume.
And please, try to spell my name correctly.
Rapping hello to you!!
For an object to float, it must be big not "exactly"
Theoretically, in the exact situation there is no definition for the float, because it is a point of discontinuity in the function.
Obviously, the ball does not float on water in the literal sense of the word.
It means that it is supposedly floating. The zero coefficient of friction, between it and the surface on which it is placed, allows a small force
around him
And for life - the word "at least" is unnecessary. the word "exactly"
Appropriate.
A 6 ton ball must displace at least 6 tons of water to float.
According to the picture, it pushes a small amount of water.
Therefore it cannot be floating on the water except in another form.
It is appropriate that someone professional come to see "where the goat is".
Thanks for the comment, I posted the news quickly and didn't think about it. I will ask for an explanation and post it when it arrives.
Why all this bravado without explaining anything intelligent about how a 6 ton ball floats?