Practice - 2. Ergonomics Case Studies & Analysis
Practice Questions
Test your understanding with targeted questions
Which specific factor in the P.E.E.F.E. method is being addressed when a designer adds a rubberized texture to a tool handle?
* Answer: Effort & Force (and Feedback & Control).
* Hint: Texture prevents slipping, which means the user doesn't have to "squeeze" as hard to maintain a grip.
💡 Hint: Texture prevents slipping, which means the user doesn't have to "squeeze" as hard to maintain a grip.
Define Neutral Posture and explain why it is the goal of ergonomic furniture.
* Answer: Neutral posture is a body position where joints are naturally aligned and stress on muscles, tendons, and the skeletal system is minimized. Ergonomic furniture aims for this to prevent long-term strain and fatigue.
* Hint: It is the position your body naturally takes when it is most "at rest."
💡 Hint: It is the position your body naturally takes when it is most "at rest."
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the "F" stand for in the P.E.E.F.E. analysis method?
* Type: mcq
* Options: A) Flexibility, B) Feedback & Control, C) Force, D) Functionality
* Correct Answer: B
💡 Hint: No hint provided
True or False: Anthropometrics is the study of repetitive motion injuries.
* Type: boolean
* Options: True, False
* Correct Answer: False
* Explanation: Anthropometrics is the study of body measurements; Cumulative Trauma Disorders (CTDs) are the study of repetitive injuries.
💡 Hint: No hint provided
2 more questions available
Challenge Problems
Push your limits with advanced challenges
The Grocery Cart Audit: You are tasked with analyzing a standard supermarket shopping cart.
* Task: Identify one Posture win (something good) and one Force flaw (something bad) in the design.
* Solution Example:
* Posture Win: The handle is usually set at a height that allows for a neutral wrist position for most adults (5th-95th percentile).
* Force Flaw: When the cart is full, the force required to "turn" the cart involves significant shoulder and back torque because the wheels are often too small or misaligned.
- Hint: Think about the difference between pushing a straight line and turning a corner.
💡 Hint: Think about the difference between pushing a straight line and turning a corner.
Redesigning for Safety: A factory worker must press a button 500 times an hour. The button is small, hard to press, and located above shoulder height.
* Task: Propose two ergonomic improvements based on Session 4 (Industrial Workspace Analysis).
* Solution:
* 1. Move the button to waist/elbow height to achieve a neutral shoulder posture.
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- Replace the small button with a large palm-switch or foot pedal to distribute the force over a larger area and reduce finger strain.
- Hint: Change the height and change the surface area.
💡 Hint: Change the *height* and change the *surface area*.
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