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Is it flying or is it falling stylishly?

DarDarCH via Wikimedia Commons , CC BY-SA “width =” 800 “height =” 530 “/>

Many rules, such as starting height and ski length, depend on the conditions and the height and weight of the athlete. credit: DarDarCH via Wikimedia Commons, CC BY-SA

If you or I dive into the air as high as possible, we can be off the ground for about 0.5 seconds.Michael Jordan was able to stay in the air for Almost 1 second.. At the Winter Olympics, there are many events in the air where athletes perform their athletic and physical feats, but none. Blurring the line between jumping and flying As much as a ski jump.


I am a student Sports physics.. Ski jumping is probably one of the most interesting events at the Winter Olympics to showcase real-life physics.The winner is athlete The person who travels the farthest and flies and lands in the best style. By essentially turning the ski and body into wings, the ski jumper can fight gravity and continue to fly in the air for 5-7 seconds. Soccer field length Through the air. So how do you do this?

How to fly

In ski jumping, three main concepts of physics work.With gravity lift Drag.

Gravity pulls the flying object down toward the ground. Gravity acts equally on all objects, and there is nothing athletes can do to reduce their effects. However, athletes interact with the air as they move. It is this interaction that can produce lift. Lift is the upward force generated by the air pushing an object. Objects can slip or fly if the force generated by lift is roughly balanced by gravity.

The object must be moving to generate lift. As an object moves through the air, its surface collides with air particles and Push these particles From the path of the object. When the air particles are pushed down, the object is pushed up as follows: Newton’s third law The movement to say that there is an equally opposite reaction to all actions. Particles of air that push the object upwards create lift.Not only speed up, but speed up Surface area Increases the amount of lift. The Angle of attack— The angle of the object with respect to the direction of air flow — can also affect lift. If it’s too steep, the object will stall and become too flat to push down the air particles.

This may all seem complicated, but sticking your hand out of the car window perfectly illustrates these principles. If you hold your hand completely flat, it will stay almost in place. However, if you tilt your hand so that the bottom points in the direction of the wind, your hand will be pushed up when air particles collide. That is lift.

It also produces the same collision between the object that provides lift and the air. pull.. Dragging resists the forward movement of the object and slows it down. As speed decreases, lift also decreases, limiting flight distance.

The goal of the ski jumper is to use careful body position to maximize lift and reduce drag as much as possible.

Fly on skis

Skiers start high on the slopes and ski downhill to speed up. They crouch down to minimize drag and maneuver carefully to reduce friction between the ski and the ramp.By the time they reach the end they can go 60 mph (96kph).

スキージャンプ:スタイリッシュに飛ぶか落ちるか?

Hang gliders have large wings, are very aerodynamic and very lightweight. All of these maximize lift and produce long flights, despite the lack of an engine. credit: Gegik via Wikimedia Commons, CC BY-SA

The ramp ends at the takeoff point. If you look closely, it’s actually slightly downwards. 10 degree angle.. Just before the athletes reach the end of the ramp, they jump. The ski landing slope is designed to mimic the path the jumper follows, so there is no more jumper. 10 to 15 feet Above ground.

Fun physics begins when the athlete is in the air.

Jumpers do everything they can to generate as much lift as possible while minimizing resistance. Athletes cannot generate enough lift to completely overcome gravity, but the higher the lift, the slower the fall and the movement down the hill.

To do this, the athlete aligns the ski with the body almost parallel to the ground and places the ski in a V shape just outside the body shape. This position increases the surface area that produces lift and places them in an ideal angle of attack that maximizes lift.

When drag slows the skier’s speed, lift slows and gravity continues to pull the jumper. Athletes begin to fall faster and faster until they land.

The rules follow physics

With so many physics working, there are many ways in which the wind, equipment choices, and even the athlete’s own body can influence how far the jump can go. Therefore, to keep things fair and safe, Many regulations..

As you watch the event, you may notice that the authorities are climbing up and down the hill from the starting point. This adjustment is based on the wind speed. The faster the headwind, the higher the lift, the longer the jump, and the possibility of passing through a safe landing zone.

Ski length is also adjusted and associated with the skier’s height and weight.Skiing is at best 145% of skier’s height And skiers Body mass index Less than 21 must have shorter skis. Longer skis are not always optimal because the heavier the ski, the greater the lift that needs to be produced to maintain the air.Finally, skiers have to Wear a tight-fitting suit To prevent athletes from using clothing as an additional source of lift.

When attending the Olympics and marveling at the physical fitness of athletes, consider learning the concepts of physics as well.


High-speed physics of how bobsleighs, rouge, and skeletons run humans faster than cars on the highway


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Is it flying or is it falling stylishly?

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