A movie shot in slow motion showing how a triple pendulum plastic bottle is shot simultaneously with one arrow
Crossbow vs Triple Pendulum in Slow Motion - The Slow Mo Guys - YouTube
The Slow Mo Guys have experimented with arrows before, including in their video ' Slicing an Arrow in Half Mid-Air in Slow Motion ,' in which they used a high-speed camera to capture the arrow being cut in half with a sword as it flew towards them.
In the previous video, where the arrow was cut with a sword, the arrow was shot in the direction of people, so the arrowhead was made of rubber for safety reasons. In the new experiment, the arrowhead is sharpened to shoot through a plastic bottle filled with water.
The camera used is capable of shooting at 1000 frames per second, and is equipped with a wide-angle lens set to 15mm to simultaneously capture the person firing the arrow and the target the arrow will hit.
First, two plastic bottles with water colored red and blue are hung, and they are made to swing back and forth like pendulums when viewed from the front, crossing each other. The moment the pendulums overlap, an arrow is fired, aiming to hit both bottles at the same time.
On the first try, the arrow passed between the two plastic bottles.
After that, he tried again and again, either missing the target completely or hitting only one of the bottles, and finally succeeded in piercing both bottles with one arrow.
The high-speed camera footage clearly shows the arrows arriving at the exact moment the pendulums overlap.
The arrow pierced the top of the blue plastic bottle and then went straight through the red plastic bottle.
The arrow hit the target behind the bottle, stopping the pendulum movement. The hole created causes water to splash.
Next, we tried a triple pendulum, adding a green bottle to the red and blue bottles. The red and blue bottles sway almost simultaneously, while the green bottle swings symmetrically.
The difficulty level has increased dramatically, making it a struggle, but because the arrow's movement is captured with a high-speed camera, they are able to identify things like 'the timing is too early' or 'the arrow's angle is not straight' and make repeated improvements.
While repeating the experiment, The Slow Mo Guys thought, 'The triple pendulum has increased the distance of the pendulum, and the arrow's speed is not enough to penetrate it at the same time?' Therefore, instead of firing it manually using a bow, they decided to fire it with a crossbow. The crossbow prepared by The Slow Mo Guys is powerful enough to fly about 320 feet (about 97 m) in a straight line.
The image below compares the speeds of a bow and arrow (top) and a crossbow (bottom). The crossbow arrow hits the target while the hand-powered arrow is almost directly in front of the user, giving a good idea of the crossbow's speed. The crossbow's measured speed was 117 meters per second.
After repeated attempts with a crossbow, we finally succeeded in shooting the triple pendulum plastic bottles simultaneously.
The arrows shot with a bow traveled a parabolic trajectory, so they struck the bottles at an angle. The arrows shot with a crossbow, on the other hand, flew almost straight, so they struck the bottles almost horizontally.
The high-speed camera footage clearly shows the arrow flying towards the triple pendulums at the exact moment they come together.
The arrow that shot through the first plastic bottle went straight through the second plastic bottle.
The third plastic bottle was shot through and water spurted out. The triple pendulum was stopped by the arrow, spraying water everywhere.
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in Video, Posted by log1e_dh