Tiêu đề GES Q1 0205 SG.pdf ✅

Study Guide General Science Unit 2: Applications of Translation and Rotational Motion Lesson 5 Application of Motion in Ergonomic Designs Table of Contents Introduction 1 Learning Competency 2 Learning Targets 2 Learn About It 2 Motion Concepts and Ergonomics 2 Principles of Ergonomics in Motion-Based Design 4 Ergonomic Design in Everyday Objects 4 Buildings 4 Vehicles 5 Furniture 6 Toys and Handheld Tools 7 Broader Impacts of Ergonomic Design 8 Key Points 9 Attributions 10 References 10 Sadasdasdas
Unit 2: Applications of Translation and Rotational Motion 5 Application of Motion in Ergonomic Designs Figure 1. A gaming chair is designed according to motion and body mechanics principles to match posture and movement for optimal comfort and performance. Introduction Ergonomics is everywhere—from the office chair that supports your back to the door handle that turns just right. These everyday designs aren’t accidental; they are guided by physics, especially the principles of motion. Understanding how objects move in straight lines or rotate helps engineers and designers create tools and spaces that reduce fatigue, prevent injury, and improve overall efficiency. In this lesson, you will explore how linear and angular motion guide the design of buildings, vehicles, furniture, and even toys. 2.5. Rotational Motion 1
Unit 2: Applications of Translation and Rotational Motion Learning Competency At the end of this lesson, the learners should be able to demonstrate through simple activities the relationship between linear and angular quantities: ● human movement (e.g. exercises, dance, and gymnastics), and ● ergonomic designs (e.g. buildings, vehicles, furniture, and toys) Learning Targets In this lesson, you should be able to do the following: ● Identify examples of ergonomic designs in everyday objects such as buildings, vehicles, furniture, and toys. ● Explain how principles of linear and angular motion are applied in ergonomic designs to improve safety, comfort, and efficiency. ● Demonstrate through simple models or simulations how motion concepts influence the design and function of ergonomic products. Learn About It Ergonomic design is a scientific approach ensuring tools, furniture, and spaces work with our bodies' natural movements, going beyond mere aesthetics. This involves applying fundamental motion principles like displacement, velocity, acceleration, and momentum in both linear and angular forms. These principles guide the design of everyday objects for safety, comfort, and efficiency. Motion Concepts and Ergonomics Effective ergonomic design ensures seamless interaction between products, environments, and the human body. This relies on a clear understanding of key concepts of linear and rotational motion, and how they apply to human movement. 2.5. Rotational Motion 2
Unit 2: Applications of Translation and Rotational Motion Figure 2. Designing for comfort requires understanding of motion as it applies to the human body. Translational (or linear) motion describes movement along a straight path, representing how objects or parts of the body translate from one point to another. In ergonomics, understanding these concepts helps us analyze and predict how users interact with products that move in a direct line: ● Linear displacement: How far an object moves in a straight line (e.g., seat adjustment distance). ● Linear velocity: How fast an object moves (e.g., speed of a sliding drawer). ● Linear acceleration: How quickly linear velocity changes (e.g., smoothness of a component's start/stop). ● Linear momentum: The product of an object's mass and linear velocity, representing its "quantity of motion. Rotational (or angular) motion describes movement around a fixed axis, which is fundamental to how many joints in the human body and parts of mechanical systems function. Grasping these angular concepts is key to designing objects that involve twisting, turning, or pivoting actions: ● Angular displacement: How far an object rotates (e.g., backrest recline angle). ● Angular velocity: How fast an object rotates (e.g., steering wheel turn speed). ● Angular acceleration: How quickly angular velocity changes. 2.5. Rotational Motion 3