A Question about Flying Clothes Pegs

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In summary, when a clothes peg is pressed down and then released, the combination of the pressing force and its reaction force (Newton's third) in the forward direction causes the peg to snap close and fly forward. This is due to the shape and slipperiness of the peg, making it difficult to apply a force entirely perpendicular to its axis. This same demonstration was previously done with cherry pits.
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Pandemonium
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When we press down a clothes peg (those big, plastic ones), and then let our fingers slip off it, the clothes peg will snap close and fly forward. Which force and its components are responsible for this forward motion?
 
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Because of the shape and slipperiness of the pegs, it is practically impossible to press down with a force truly at right angles to the peg's axis. So the pressing force, and its reaction force (Newton's third) upward from the surface the peg is lying on have both got components in the forward direction. And the vector sum of those two forces has a double component in that direction. It is this forward force that shoots the peg out.

This same demo used to be done with cherry pits in the old days.
 

1. How do flying clothes pegs work?

Flying clothes pegs work by utilizing the principles of aerodynamics and wind currents. The pegs have a streamlined shape that helps them catch the wind and stay airborne. The force of the wind creates lift, allowing the pegs to fly through the air.

2. Can anyone make flying clothes pegs?

While anyone can attempt to make flying clothes pegs, it requires a good understanding of aerodynamics and the ability to create a streamlined shape. It is also important to use lightweight materials to ensure the pegs can stay airborne for a longer period of time.

3. How far can flying clothes pegs travel?

The distance that flying clothes pegs can travel depends on various factors such as the strength of the wind, the weight of the pegs, and their design. On average, they can travel up to several hundred feet.

4. Is there a specific way to launch flying clothes pegs?

Yes, there is a specific way to launch flying clothes pegs for maximum distance and flight time. The pegs should be launched at an angle, with the open end facing the wind. This allows them to catch the wind and stay airborne for longer.

5. Are flying clothes pegs just for fun or do they have practical uses?

Flying clothes pegs are primarily used for recreational purposes and as a science experiment. However, some people have also used them as a tool for measuring wind speed and direction, as the pegs behave differently depending on these factors.

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