The Ollie can also be done as the skater is rolling along on the ground at constant speed. In this case the physics of the Ollie, described in the four stages above, remains the same. Physics Of Skateboarding — Frontside The physics of the frontside involves the conservation of angular momentum. In this trick the skateboarder rotates his board degrees in the air so that, upon landing, he is facing in the opposite direction to before.
He does this even though his initial angular momentum is zero, meaning he is not rotating initially. The figure below illustrates this trick. Because of this, the gravity force cannot exert a torque on the skater-board system. So as a whole the system cannot rotate.
So what is the physics taking place here, and how does the skater manage to rotate his board degrees by the time he lands back on the ground? He does this by rotating his upper body and lower body in opposite directions. This way he can land with the board facing the other way, while still adhering to the physical requirement that the angular momentum of the system remains zero.
As shown in the figure above, he gives his upper body a clockwise rotation, resulting in an angular momentum for his upper body equal to H 1. At the same time he gives his lower body including the skateboard a counterclockwise rotation, resulting in an angular momentum for his lower body plus skateboard equal to H 2. The key is for him to generate a high enough H 1 so that his lower body including the skateboard must match this value with H 2 by rotating degrees in the other direction.
He does this by extending out his arms as he is airborne. Once the skateboarder lands on the ground he simply rotates his upper body back around so that he now faces the wall. He is able to do this because after landing he is able to exert a torque against the ground, allowing him to rotate his body back around so that he is now facing entirely in the opposite direction to before.
Physics Of Skateboarding — Pumping On A Half-Pipe Pumping on a half-pipe is used by skateboarders to increase their vertical take-off speed when they exit the pipe. This enables them to reach greater height and perform more tricks, while airborne.
The figure below shows a skateboarder approaching the curved portion of the half-pipe. In other words, his feet never have to leave the board.
This begs the questions; what is the physics taking place, and how does the skater increase his speed without pushing off the ground? To increase his speed, the skateboarder crouches down in the straight part of the half-pipe as shown in the figure above. The first thing I did with it was ride it down a big hill, a valiant but ill-fated adventure which ended with me jumping off the skateboard, rolling down the grass, and arriving scraped up, deflated, and rather disoriented near the entrance to my college cafeteria.
In my defense, the wheels and ball-bearings on that skateboard had been pre-lubricated to minimize friction, and why would anyone do that, that's just crazy. So believe me when I tell you that I am incredibly envious of skaters who can pull off tricks like this. View Iframe URL. Now, I might not be able to skate to save my life, but I can do a little physics. So here's a thought - maybe I can use physics to learn how to do an ollie. Here's the plan. I'm going to open up the above video of skateboarder Adam Shomsky doing an ollie, filmed in glorious frames-per-second slow motion, and analyze it in the open source physics video analysis tool Tracker.
The first thing I did was track the motion of the front and back wheels Tracker has a very convenient autotracker feature that can do this for you. One useful physics trick here is to track the center of mass of the skateboard, i. Here is that curve overlapped in green. Now, if you were to do the same tracking exercise for a soccer ball that's been kicked, you'd get a neat arc-like shape called a parabola.
These results corroborate research indicating that the mechanical power produced by muscles and estimated based on the height of the vertical jumps achieved or using information supplied by a force platform system, can be considered important for success in athletic performance STONE et al. Evaluation of performance during Ollie maneuver demonstrated that, on average, the skaters were able to clear an obstacle By contrast, hip extensor force on the non-dominant side and squat-jump height cannot be used to explain performance of the Ollie maneuver.
These results suggest that performance of the Ollie maneuver in skateboarding basically depends on muscle power, which represents useful information for athletes and coaches. Abrir menu Brasil. Abrir menu. Athletic performance; sports; skating; Ollie maneuver.
Keywords: Athletic performance; sports; skating; Ollie maneuver. Kinesiological factors in vertical jump performance: differences among individuals. Journal of Applied Biomechanics , Champaign, v.
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Keep your center of balance between your feet to keep control. Raise your arms as you jump. Try rapidly raising your arms as you execute the jump to increase your upward momentum.
Delay the sweep. If you can delay your sweep by just a fraction of a second, you can achieve a higher jump. Pull up your knees. For the most impressive ollie, pull both of your knees up toward your chest as high as you can as you reach the high point of your jump, and level the board in this position. Keep rolling as you land. Your forward momentum should keep rolling forward as you land.
Did you know you can get expert answers for this article? Unlock expert answers by supporting wikiHow. Jon Depoian Skateboarding Instructor. Jon Depoian. Support wikiHow by unlocking this expert answer. Not Helpful 5 Helpful 2. No, just a regular skateboard, although a skateboard with low trucks is easier to do the tricks.
You won't want to use a pennyboard or longboard. Not Helpful 6 Helpful Don't just push down with your foot, but instead do a flick-like motion with your toes on the tail. Just try it as hard as you can, and eventually you will get it. Not Helpful 19 Helpful Does this trick work on every kind of skateboard?
Should I get a special one for all of it and the other tricks to learn? You can use almost any board other than an penny board and probably not an egg-board. But a long board may also be hard. But for other tricks certain boards make it easier to do. Not Helpful 11 Helpful 9. Not Helpful 9 Helpful Include your email address to get a message when this question is answered.
Be patient. Like any trick, this can take a while to learn, and may be difficult for you, especially if you haven't been skating long. Helpful 0 Not Helpful 0. Don't worry about high you are jumping when you first start trying to learn this. Focus on getting the technique down first. Once you get good doing this trick while the board is rolling, start trying to jump over small objects, and work your way up to larger ones.
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