Physics of Bicycles Essay

These adaptations are relevant because the body is being stressed which leads to more blood being needed by the working muscles. With this increase in stroke volume and cardiac output, it also increases the heart rate. Heart rate is the amount of times the heart beats per minute. This means that the heart is working hard and being progressively overloaded increases the efficiency and will improve the performance of the athlete. Another adaptation is oxygen uptake. When the body is being progressively overloaded oxygen uptake is really important because it is the amount of oxygen being delivered to working muscles. This amount increases when exercise begins but decreases as adaptations occur. This is very similar to lung capacity as lung capacity is the amount of air that the lungs can hold. Another physiological adaptation in relation to progressive overload is haemoglobin levels. Haemoglobin is the substance in the blood that binds to oxygen and transports it around the body. These levels are important because it’s telling us how much oxygen and blood is being used and directly relates to stroke volume and oxygen uptake. Muscle hypertrophy is a term that refers to muscle growth together with an increase in the size of muscle cells. For a sprinter this adaptation is very important because it indicates that the muscles have been stimulated and grown and an

Because Competition Bikes was able to save money on Gasoline and maintenance costs for vehicles, yet they were unsuccessful at using their vehicles making this a weakness.

The Wingate test used a Monark cycle ergometer and Wingate computer programme. The test involves maximal effort during a 30 second sprint cycle. As there is little skill involved in sprint cycling, the Wingate test is reliable, and because most factors are controlled, the Wingate test is valid. The controlled factors of the Wingate test include resistance on the weight pan remains constant. The distance travelled in one pedal revolution remains constant. Acceleration due to gravity remains constant. The only part of the power equation that can change is the revolution per second, which is dependent on the athlete completing the test.

bikes, are lighter than road bikes. Dirt bikes are built to handle rough terrain like dirt,

ground, so it accelerates. If the track tilts up, gravity applies a downward force on the back of the

Reynolds X100 as stated in paragraph one & two has a lack of strength compared to steel. The best way to deal with this is to increase the tubular diameter making it ovular that makes up the bike frame, hence also making sure that it is very resistant to bending. Though these enlarged and irregular sections are difficult to design and employ, the added stiffness to the frame is extensive.

Bicycle Braking systems are a means of which we are able to halt the movement of a bicycle through the expulsion of kinetic energy. The Kinetic potential energy that is present in a moving bicycle is

The bull rider’s arms absorb the full force of the bucking bull. The only tack that is used

Drag, when air passes around the bob-sled it creates drag. This drag slows the bob-sled down. To minimize the amount of drag the bob-sled undergoes,

“It’s amazing how much technology has affected the modern age of motocross... Equipment is mounted everywhere on factory machines, and teams are able to chart exactly how a bike performs thanks to black boxes, GPS antennas, and an array of sensors.” -Restama. Technology is one of the numerous aspects that has helped supercross to grow continuously over the years. As well as giving riders another object to spend money on.

The other type, supercross is where riders are in an indoor track. The track is tight. There are triples about 60 – 75 feet long. A triple is three piles of dirt in a row packed smoothly. The first is a takeoff, which launches the rider in the air. The middle is there for safety or in case amateur riders cannot jump the whole distance. The last is the landing. This is where the riders land. Also, in supercross there are sections called whoops. A whoop section is piles of dirt about 3 ½ feet tall, and some are about 4 feet deep. You are supposed to skim over them with your front tire up and only your back touching. These in my opinion are the hardest. Because your body is being thrown around and it is all that you can do to stay on the bike, you go back and fourth as fast as you can blink.

and are designed out of different materials like wood and steel. Although roller coasters are fun and exciting, the questions, what allows them to twist and turn, go up and down hills at a fairly good speed? Why do they not fall off of the track when it goes through a loop? The answer to these questions and others about roller coasters lies in the application

Motocross is a fast and evolving sport that is getting a lot of attention these days. It provides exhilarating and non-violent entertainment which hard to find. Although whatever the sport might be, there will always be some unfortunate circumstances, circumstances that can be prevented and reduce by having the right gear.

When you start moving that's when the motor lets go then you have kinetic energy when it falls it builds up enough energy to propel the rest of the ride. Even though you don't notice or think about it gravity is the reason you stay on the track.

A rightward moving rider gradually becomes an upward moving rider, then a leftward moving rider, then a downward moving rider, before finally becoming a rightward-moving rider once again. There is a continuing change in the direction of the rider as he/she will moves through the clothoid loop. A change in direction is one thing of an accelerating object. The rider also changes speed. As the rider begins to climb upward the loop, he/she begins to slow down. What we talked about suggests that an increase in height results in a decrease in kinetic energy and speed and a decrease in height results in an increase in kinetic energy and speed. So the rider experiences the greatest speeds at the bottom of the loop. The change in speed as the rider moves through the loop is the second part of acceleration which the riders experiences. A rider who moves through a circular loop with a constant speed, the acceleration is centripetal and towards the center of the circle. In this case of a rider moving through a noncircular loop at non-constant speed, the acceleration of the rider has two components. There is a component which is directed towards the center of the circle (ac) and relates itself to the direction change and the other component is directed tangent (at) to the track and relates itself to the car's change in speed. This tangential component would be