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The Duchess of Sussex told reporters that she is "always proud" of her husband. And we just learned where it came from. The ambitious father who turned his two daughters Venus and Serena Williams into tennis […]. Want something totally different for your event of variety show? Our unbelievable variety act features a human sized four way slinky toy that can stretch out and twist into all kinds of shapes and sizes. Children will be enthralled by the sheer visual spectacle of the dance act while adults will be equally entertained trying to figure out where the human body fits into the costume.
This insane speciality act is guaranteed to bring a touch of whimsy and surreal visual spectacle to any event looking to see something unique and fun. Countless audiences across the world have been spellbound by this twisting and spilling slinky act.
Half time shows, TV chat shows and audiences in America, Dubai and Madagascar have all been blown away by this hilarious and inventive human slinky dance act. That collapse travels down as a wave through the Slinky. The bottom coils remain at rest until the top crashes into them.
And that's the key to understanding how the bottom of the Slinky remains suspended in midair for a short while. This levitation time — approximately 0. Gravity and tension of the spring effectively cancel each other out. Kolkowitz said that one way of understanding this is that on the moon, the weaker gravitational field wouldn't stretch the Slinky as much, so the spring would compress more gently towards the bottom when dropped, taking the same 0.
On Jupiter, the stronger gravitational field would stretch the suspended Slinky to a greater degree, so that the spring would have a larger distance to compress. But the more stretched-out top would snap back faster toward the bottom, resulting in the same levitation time. As Kolkowitz pointed out, however, the Slinky's center of mass — which shifts, but is always located somewhere in between the top and bottom of the toy — still accelerates according to gravity all the way down to the ground from the moment it's released.
So there's no violation of any of Newton's laws or Galileo's observations about falling objects. So at the same spots where there are nodes of motion, there are antinodes of slope.
Tie the fishing line to a chair. Slide the slinky onto the fishing line, and then tie the other end of the fishing line to another chair. Pull the chairs apart until the line is taut. Optional, rest the slinky on a smooth table top. Grab the ends of the slinky in your hands.
Stretch the slinky to between 1 and 2 meters long. Move your hands together and then apart, just as if you were clapping. Notice the motion of the slinky. Your hands move a lot while the center of the slinky moves very little. The center is a node. You can attach a small flag of masking tape to the center of the slinky to make it easier to see that the center is not moving.
Next notice the spacing between the slinks turns of the slinky. When the slinks are jammed close together the slinky models high pressures in a gas, where the atoms are closer together.
When the slinks are far apart ,the slinky models low pressure in a gas. Let's call closely spaced slinks high pressure and widely spaced slinks low pressure. Notice that the pressure change is greatest at the center where the slinks alternately bunch-up and spread apart, and where the side to side motion of the flag is the least.
Count the rhythm of this motion: 1,2,3,4,1,2,3,4, Move both hands in the same direction, if the slinky stretches right-left move both hands to the left then to the right.
One of our teachers described this as the sound of one hand clapping twice. Notice the motion of the slinky which is called longitudinal motion. Find the frequency of hand motion that produces the largest motion of the center of the slinky for the smallest motion of your hands.
Notice that the center of the slinky is an antinode, your hands are nearly nodes. The flag marking the center whips back-and-forth.
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