Chapter – 8

Biomechanics and Sports

In this post we have given the detailed notes of class 12 Physical Education Chapter 8 (Biomechanics and Sports) in English. These notes are useful for the students who are going to appear in class 12 board exams.

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Chapter 8: Biomechanics and Sports 🏋️‍♀️🏀

1. What is Biomechanics? 🤔

Imagine biomechanics as the science of how our bodies move. It’s like a mix of biology (the study of living things) and mechanics (the study of forces and motion). Biomechanics helps us understand why and how we move, especially in sports. It’s a powerful tool for improving performance and preventing injuries.

2. Why is Biomechanics Important in Sports? 🏆

• Better Technique: Biomechanics helps athletes figure out the most efficient way to move. Think of a runner trying to reduce air resistance—biomechanics can analyze their running style to find improvements. 🏃‍♂️💨
• Improved Equipment: Biomechanics principles are used to design better sports gear. A tennis racket, for example, can be designed for more power and control using biomechanical insights. 🎾
• Preventing Injuries: By understanding the forces on the body during sports, we can learn how to avoid injuries. Gymnasts, for example, use proper landing techniques to minimize stress on their joints. 🤸‍♀️
• Boosting Performance: Biomechanics helps athletes find areas where they can get better. A golfer’s swing can be analyzed to see how they can hit the ball farther. 🏌️‍♂️

3. Types of Body Movements 🏃‍♀️🤸‍♂️

• Flexion: Bending a joint, decreasing the angle between body parts (like bending your elbow).
• Extension: Straightening a joint, increasing the angle (like straightening your elbow).
• Abduction: Moving a body part away from the midline of your body (like raising your arm out to the side).
• Adduction: Moving a body part toward the midline (like lowering your arm back to your side).

4. Newton’s Laws of Motion: The Physics of Sports ⚙️

These laws explain how things move, and they’re super important in sports:

• 1st Law (Inertia): A still object stays still, and a moving object keeps moving at the same speed and direction unless a force acts on it. A soccer ball stays put until someone kicks it. ⚽
• 2nd Law (Acceleration): The harder you push or pull something (force), the faster it will accelerate. It’s also harder to accelerate something heavier. Throwing a heavier basketball the same distance as a lighter volleyball takes more force. 🏀🏐
• 3rd Law (Action-Reaction): For every action, there’s an equal and opposite reaction. When a swimmer pushes back on the water, the water pushes them forward. 🏊‍♀️

5. How Newton’s Laws Apply to Sports ⚽🏀

• 1st Law: A hockey puck keeps sliding until friction slows it down. 🏒
• 2nd Law: A baseball player throws a fastball harder by applying more force. ⚾
• 3rd Law: A basketball bounces back up when dribbled because of the force from the ground. 🏀

6. Friction: The Grip and the Slip ⛸️

Friction is a force that opposes motion when two surfaces touch.

• Static Friction: Keeps things from starting to move (like your shoes gripping the floor). 👟
• Kinetic Friction: Opposes motion when things are already moving (like a hockey puck slowing down on the ice). 🏒

7. The Good and Bad of Friction ➕➖

• Good: Helps us walk without slipping, lets us grip things, gives cars traction. 🚶‍♂️🚗🤝
• Bad: Causes wear and tear, creates heat, can slow things down. ⚙️🔥

We hope that class 12 Physical Education Chapter 8 (Biomechanics and Sports) notes in English helped you. If you have any query about class 12 Physical Education Chapter 8 (Biomechanics and Sports) notes in English or about any other notes of class 12 Physical Education in English, so you can comment below. We will reach you as soon as possible…