Rope Around The Earth Add 10 Feet

15cm that s how far off the ground we re lifting the string remember out of 6 370km is close.

Rope around the earth add 10 feet. 3 footcircumference 131 480 194 53 feet. Multiply by 2 to get. Suppose you tie a rope around the earth at the equator circumference approx. All around the earth the rope is raised up uniformly as high as is possible to make it tight again.

Let s say you pull the rope as tight as it will go and then add back 6 feet of slack before tying the knot. Subtract larger of the two diameters from the smaller. Divide that by 2 to get how high off the ground the rope is all the way around the earth. Divide by 2 pi to get.

Now untie the rope and add. Suppose you tie a rope tightly around the earth s equator. You add an extra 3 feet to the length. Difference of diameters is 0 95 feet.

If the extra rope is distributed evenly around the globe will there be enough space between the rope and the surface of the earth for a worm to crawl under. If you put 1 metre high sticks right around the equator and lay the rope on. 3 foot diameter 41 851 445 75 feet. In fact this brain teaser requires neither an exact measurement of the earth s circumference which in fact varies by many kilometers depending on which circumference you measure nor even an assumption that the earth has a circular cross sect.

Divide again by pi to get the earth s radius 6 370km. Suppose you tie a rope tightly around the earth s equator. Rope around the earth consider the earth to be a perfect sphere. Student answer form blackline master rope around the world you have a piece of rope that just fits around the earth.

3 foot radius 20 925 722 88. You add an extra 3 feet to the length. All around the earth the rope is raised up uniformly as high as is possible to make it tight again.