In the case of discus throwing for example, the force that acts as the centripetal force is that exerted by the hand of the thrower onto the discus. The hand is constantly turning (until the throw) so the force it exerts on the discus fulfils the aforementioned direction requirements.
Why do discus players spin?
The spin helps the discuss catch and ride the wind to go farther. If the athlete released the discus at the right point, the discus will land in the cone-shaped throwing sector. If the discus lands outside that sector, the throw won’t count. There are different types of discuses.
How fast is a discus thrown?
Discus throw 55 m.p.h. In this track and field throwing event, speed is generated mostly through body rotation. Because of the winglike shape of the discus, which weighs about 4-1/2 lbs.
How does a discus fly?
During its flight the discus is influenced by gravity and the aerodynamic forces of lift, drag and pitching moment. Those forces act on the center of pressure (CP) which does not necessarily coincide with the center of gravity (CG) of the discus and is located somewhere in front of the CG.
Is discus throw a projectile motion?
Disc Throw An athlete throwing a disc in the air sets it up at a certain angle. This is because it provides the disc with both horizontal and vertical velocity. In absence of either of the velocities, the disc cannot travel a long distance. Hence, projectile motion is very necessary for an athlete to throw a disc.
How is projectile motion used in discus?
By doing the two spins, you are building up the momentum with the speed of your spin as well as the mass of your body, therefore, the faster you spin, the further the discus will travel. In order to calculate the time, height and range of a discus throw, you can use the projectile motion equations.
How do you throw discus farther?
Is discus hard track?
Mastering the discus throw is a difficult task, even for very experienced track and field athletes. Learning to throw in a stationary motion can be a good stepping stone to greatness, and implementing effective training drills can increase comfort with all the motions involved in throwing.
How heavy is a Olympic discus?
What is the weight of the discus and how is it thrown? The weight of the discus is fixed at 2kg for the men and 1kg for women. The metal disc is basically thrown by an athlete by standing inside a circle with a diameter of 2.5m.
How heavy is a discus in middle school?
The 1 kg discus size is used by both boys and girls in middle school (7th and 8th grade). It is also the stand alone size for women in general. So, it can be used by women all the way up to the Olympic level.
What is the perfect angle for discus?
The optimal roll angle – the angle the discus is tilted to the right as seen by the athlete – is 54.4 degrees. That lets the lift force stay nearly vertical the longest, especially near the end of the flight, keeping the discus aloft.
What angle should you release a discus?
Your thumb should lie flat on the discus at approximately a 45-degree angle away from the rest of your fingers. The fingers should lie flat on the discus. The release is initiated with the pulling of the little finger working to the index finger.
How do you get discus to fly flat?
Can you spin when throwing the discus?
Swing your arm and spin your body. Swinging the arm that is holding the discus and then spinning your body around will help you to gain momentum for the throw. The more momentum you can build, the better. Most discus throwers spin around one and a half times before releasing the discus.
What is angle of projection?
The angle between the direction of projection and the horizontal drawn at that point is called the angle of projection.
What are 2 examples of projectile motion?
- Throwing a ball or a cannonball.
- The motion of a billiard ball on the billiard table.
- A motion of a shell fired from a gun.
- A motion of a boat in a river.
- The motion of the earth around the sun.
Why is projectile motion so important in sports?
Understanding how projectile motion works is very beneficial in determining how to best propel an object. For the javelin throw, being able to calculate the different variables helps the athlete to develop a better technique for them personally in order to throw the longest distance.
What is the role of projectile motion in sports?
In real life, the projectile motion finds applications in sports. Playing basketball, football is examples of projectile motion in real life. While throwing a basketball into the basket, the player shoots the ball in such a way that the flight taken by the ball is in the form of a parabola.
How is projectile motion used in soccer?
When the soccer ball is kicked into the air it becomes a projectile and follows a parabolic path through the air. This is how soccer players get the ball up and over defenders with free kicks and across the field with crosses.
What muscles do you use when throwing discus?
Your shoulders and triceps contract to lift and extend your throwing arm. Your forearm, wrist and hand muscles contract to hold and release the discus. Your back and bicep muscles contract as you bring the discus back, then stretch as you extend and release the discus.
What are the 3 phases of discus throw?
A useful way of breaking it down is thinking about three key phases, a beginning, middle and end. In each phase there are several sections. For the following example, the beginning is the wind and pivot, followed by the middle, the step, 180 and turn, and the end is the release.
Is shot put or discus easier?
The Shot is easier than the discus. The shot is harder on your body than the discus, but it is easier to learn for one obvious reason… the implement sits on top of you vs away from you.
What is average high school discus throw?
Recap. 120 feet is the entry point to high-level discus throwing. If you are serious about getting to the next level with your throws, these are essential weight room numbers to hit. Always remember however that these numbers are averages.
What is the last skill of discus throw?
Swing the discus twice in a forward-back manner next to your body. Remember to squeeze it out properly. Position your throwing arm straight. After one and a half or two swings, throw the discus up in the air.
What are the skills in discus?
- Rotate shoulders 90 degrees over bent right knee.
- Bend both knees.
- Rapid movement forward and upwards of legs.
- Followed by shoulders and arm rotation.
- Release towards target or in an upward motion.
- Right heel out and knee rotates in for right handed throw.