It is hopefully clear that a floating boat displaces a volume of water, and that the weight of the boat is equal to the weight of the water it displaces.
Obviously, then, placing a boat into a partly filled tank of water means that the level of water will rise. It therefore follows that if you place a lead weight into the boat, the water level will rise further.
So what will happen if you then drop that same lead weight over the side of the boat, into the water? Will the water level rise, fall, or stay the same?
This is an easy one to test out of you have a piece of paper and a few pennies.
Best of luck, and as always, answer is in the comments.
The first elevator machine is believed to have been the invention of Archimedes, in the third century BC. It took the form of a rudimentary cab supported by a hemp rope, and powered by the manual labour of humans or animals.
It wasn’t until 1852 that Elisha Otis devised his safety elevator, designed to lock in place by toothed guides at the side of the wall, if it started moving too quickly. He demonstrated the principle at Crystal Palace in 1853, on an open elevator platform above a stage, set between two toothed girders.
Most modern elevators are derived from his designs – but unlike his demonstration, they are enclosed within shafts. Though this is primarily for convenience, what benefit does a well-fitted shaft offer that a securely enclosed cab does not.
Hello dear readers, I have another puzzle for you for Solve it Sunday. If you like donkeys, if you like puzzles, if you like riddles, if you like using that thing sitting in your skull and are bored out of your mind, you should take a look!
Several statements are given below. You may assume – for the duration of this problem – that they are absolutely true in all particulars. From that assumption, you should be able to provide an answer to the question that follows.
Max Bezzel, a German chess master, was the first to pose this question, in 1848. It has provided plenty of material for discussion since then.
A chess queen attacks in eight directions — vertical, horizontal, and diagonal straight lines. His question was whether it was possible to place eight queens on a regular 8×8 chess board so that none of them could attack any other.
Your ability to think logically is the only thing being tested in this trial.
Five friends are in a café, discussing their musical tastes. Using the information given below, can you find the name of the espresso drinker?
-Steve is drinking cocoa, but he is not the person who likes rock, who is wearing red. -The latte drinker is wearing black and does not like pop or classical. -One person is wearing green. -Bruce is not drinking cappuccino. -Megan is not drinking cappuccino either, and she doesn’t like rock. -Tea is being drunk by the country fan, who is not wearing cream. -Diana likes electronicica. -Joan is wearing blue, and does not like country or classical.
Hello my dearest puzzle solvers. Solve it Sunday is a weekly riddle or puzzle I give to you guys to solve. Each of the puzzles were created by Einstein himself, but with a bit of logic regular people can solve them too.
Today’s puzzle only requires you to think a little bit and read carefully. As always, best of luck to you, and the answers are in the comments!
Although we are 93 million miles from the sun, light travels so swiftly that it takes just eight minutes for its light to reach our Earth. To give you an idea about the vastness of our solar system, it takes sunlight 43 minutes to reach Jupiter, one up to nearly seven hours to get out to poor Pluto. But for now, return your thoughts to this planet.
For the sake of argument, let us pretend that where you are right now, sunrise tomorrow will occur at exactly 6 a.m. However, some unknowable force interferes overnight, so that the light of the sun reaches the East almost instantly. Perhaps a wondrous portal opens that effectively cuts the travel distance of the light down to under a second. The precise mechanism does not matter. What is important is that the light's journey is shortened from eight minutes to fractions of a second, without any ill effect to us.
What time would you then expect to see tomorrow's dawn?
Hello my dear Sherlocks, Einsteins, and other puzzle solvers. You’re probably all cooped up and sick of your family at this point, and need something to keep morale up.
Well, I got just the thing for you.
As always, the solution to the riddle is in the comments.
The mathematics of infinity can be startlingly beautiful. It can allso be just plain startling.
Consider the natural numbers – 1, 2, 3, 4, etc. They are infinite; any number you can conceive of can be increased. Now consider the even natural numbers – 2, 4, 6, 8, etc. These also obviously extend to infinity.
So if you compare the set of all natural numbers with the set of all even natural numbers, which is larger?
I read lots of books, from mythology retellings to literary fiction and I love to reread books from childhood, this is a place to voice my thoughts for fun. I also like to ramble about things such as art or nature every now and again.