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The physics of Skateboarding
Transcript of The physics of Skateboarding
As I have proven so far, skateboarding does not defy physics whatsoever. On the contrary it is in fact, helped and explained by Newton's three laws. from the tricks that you are able to do and the things that affect skating, many aspects of skateboarding would not be possible without physics. Thanks for watching!
Since the humble beginnings of skateboarding, it has advanced a lot. From new ways to make boards, new wheels, and new limits, there has been so much progression. There has been new ideas of what's possible and what isn't. Some think that skateboard defies physics, but it is actually helped by them. Now lets take a look at how skateboarding is explained by physics.
Skateboarding, defying physics, or being helped by them?
Skateboarding tricks: explained by physics
The biggest part of skateboarding is doing tricks. This can sometimes look like magic to bystanders, but is actually simply explained by physics. Here is a list of how some tricks are done. A basic trick, the ollie, is done by applying newtons third law, because you push down with your foot on the tail of the board, and the tail pushes back up. Then, you slide your front foot to make the back go up and even out the board. This whole time you also have to keep your feet at the same level as the board, following it up and down
The ollie is the most basic trick, and therefore, many tricks are based off of it. One of them a frontside 180, uses newtons first law in a sense. Newtons first law states that an object in motion will stay in motion until and outsides force acts on it, and vice versa. The front 180 is an ollie combined with a 180, with the skater looking forward when he is halfway through. In midair, the board and the bottom half of his body rotate the 180, while the top half of his body stays the same, which allows the angular momentum to remain at 0. when the skater lands, he rotates the top of his body around to match the bottom half.
. Another trick is a pop shuvit. In this trick, you spin the board 180 degrees. It is done by combining a pop, like with an ollie, and a spin, like a 180. For this trick, your feet are separated from the board in midair, unlike an ollie. On another note, depending on if your foot pushes more down, or pushes more to the side, it will affect how high your skateboard goes. More force down= more equal and opposite reaction up.
. One more skateboard trick, a kickflip, is extremely close to the ollie in many ways. Kickflips are pretty much exactly the same as ollies, except for one big change, the board does a barrel roll in midair. You stand on the board the same, but when you pop and slide your foot, your toes slide off the board the spin it. Your foot causes rotational momentum to continue spinning the board and gravity causes you and the board to come down.
. pumping on a ramp is a way to gain speed on a skateboard without having your feet leave the board. This is done in a similar manner of when you pump on a swing to gain speed. It is done by crouching down, and then once you approach the curve, standing up and push down on the board. Newtons third law states that, for every action there is an equal and opposite reaction. That is what’s happening when you push against the skateboard, it pushes against back and you go faster.
How do outside forces affect skateboarding?
When you turn in skateboarding, you shift your weight to one side of the board, and the more weight that you put on that side, the sharper your turn will be. Gravity supplies the force that skaters need to go up and down ramps. When you are in the air, just about to start coming down, your stored potential energy, soon turns into kinetic energy needed to go up the other side of the ramp. Your height when you go up one side of the ramp is proportional to the potential energy that you gather on the other side. Friction is also a big part of skateboarding. One of the most important factors is friction on the wheels, because that can change how fast you go (lots of friction=slow, less friction=fast) and how much you’re wheels slide(more friction=less sliding, less friction=more sliding)