Rope Around The Earth Puzzle

From there it s not hard to believe that adding 3 feet to a rope around the actual earth would raise it almost 6 inches.

Rope around the earth puzzle. The idea is to imagine the earth is a cube or just a square really and ask yourself if you added say 8 feet to the rope how far would that raise it above the square earth. If you put 1 metre high sticks right around the equator and lay the rope on. Now imagine the rope is made just one meter longer and lifted uniformly off the surface until it is once again taught. Imagine a rope tied around the earth s equator like a ring on a person s finger.

This string is cut and a piece 1 metre 3 ft 3 in in length is added in. The rope around the earth puzzle. Now imagine lifting off this very long rope don t ask me how cutting it somewhere so as to stitch into it exactly one meter of extra rope. Student answer form blackline master rope around the world you have a piece of rope that just fits around the earth.

Update on the rope around the earth puzzle in the light of the recently observed gravitational waves. Rope around the earth puzzle 1702. In a common version of this puzzle string is wrapped around the equator of a perfectly spherical earth. String girdling earth is a mathematical puzzle with a counterintuitive solution.

This gem from 1702 shows how simple intuition may fail us. Suppose allistair then comes. The string is now rearranged so that it is at a uniform height above the equator. Suppose poindexter takes a very long rope and wraps it around the equator of the earth.

In the case of our string around the earth puzzle the radius is being increased by 15cm so we need to know that as a fraction of the original radius. Rope around the earth puzzle imagine a rope that fits snugly all the way around the earth like a ring on a person s finger. Imagine you re given a rope that tightly encircles the equator of a basketball.