Achieving Record Distances in the Hammer Throw

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In summary, the record distance for the hammer throw is 87m and requires a centripetal acceleration of 711 m/s^2. To find the speed of the ball when released at a radius of 1.21m, a velocity of 29.33 m/s is calculated. In determining the range when the ball is released 2m above ground at an angle of 42 degrees above the horizontal, the final velocity in the y-component should have been -19.6 m/s and an acceleration of -9.8 m/s^2 should have been used.
  • #1
mr1709
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Homework Statement


The record distance for the hammer throw is about 87m. to achieve this distance, an athlete must produce a centripetal acceleration of nearly 711 m/s^2.
a) Given a radius of 1.21 m calculate the speed of the ball when it is released
b) The athlete let's go when the ball is 2.0 m above the ground moving at an angle of 42 degrees above the horizontal. Determine the range. Ignore any air friction

Homework Equations



The Attempt at a Solution

[/B]
Solved part a and got a velocity of 29.33 m/s. Having an issue with b, i have the solution manuals solution but i don't quite understand why they did certain things in their process. For one, why did they find the final velocity in the y component, why not just immediately find the time? And, they used displacement as -2...which makes sense because its a displacement of -2 metres, but they used positive 9.8 as the acceleration. Why was -9.8 not used and why did they even find the final velocity...why not just go straight to the time using a different kinematic equation? The attached pics contain my solution and the textbooks solution.
 

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  • #2
The two solutions are equivalent and ought to give the same answer. Which one is used depends on one's personal preference. Having said that, I add that you are correct in pointing out that they should have used -9.8 m/s2. The y-component of the velocity is 19.6 m/s at a height of 2 m above ground. When in drops on the ground it must have a magnitude larger than 19.6 m/s. The solution's claim that it's 18.58 m/s is in error.
 
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Related to Achieving Record Distances in the Hammer Throw

1. How do you achieve record distances in the hammer throw?

To achieve record distances in the hammer throw, athletes must have a combination of strength, technique, and speed. They also need to have proper training and conditioning, as well as a deep understanding of the physics behind the throw. Additionally, having the right equipment and using proper throwing techniques can also contribute to achieving record distances.

2. What is the key to achieving record distances in the hammer throw?

The key to achieving record distances in the hammer throw is having a strong and explosive release of the hammer, along with a high level of rotational speed. This requires a combination of proper technique, strength, and speed, as well as a deep understanding of the mechanics of the throw and how to use them to an athlete's advantage.

3. How important is strength in achieving record distances in the hammer throw?

Strength is a crucial factor in achieving record distances in the hammer throw. The stronger an athlete's muscles are, the more force they can generate to propel the hammer further. This includes not just overall strength, but also specific strength in the muscles used for the hammer throw, such as the shoulders, core, and legs.

4. What role does technique play in achieving record distances in the hammer throw?

Technique is a key element in achieving record distances in the hammer throw. Proper technique allows an athlete to generate maximum force and speed, as well as control the direction and trajectory of the hammer. Without proper technique, an athlete may not be able to fully utilize their strength and speed, leading to shorter distances thrown.

5. How do you train to achieve record distances in the hammer throw?

To train for achieving record distances in the hammer throw, athletes must focus on building strength and power through weight training and explosive exercises. They also need to practice the specific techniques and movements of the hammer throw regularly. Additionally, working on speed and agility can also improve an athlete's performance in the hammer throw.

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