Domain 2 - Ergonomics Flashcards
The science that applies the knowledge related to human capabilities and limitation to the design of work environments is called:
Ergonomics
In designing a piece of equipment, the controls and displays must conform to which principles?
Displays should generally move in the same direction as movement of controls.
Some industrial tasks may cause tendonitis, bursitis, or carpal tunnel syndrome. What is any example that could cause these diseases?
Static load on hand and shoulder.
In occupation ergonomics, the abbreviation CTD stands for:
Cumulative Trauma Disorders
Approximately what percent of musculoskeletal injuries are caused by pushing or pulling?
20%
What is the approximate pushing force (in pounds) that a healthy young male can exert on an object, if the floor coefficient of friction is 0.3?
44 Pounds
The probability of tipping over an object by pushing it increases as the:
Grasping point moves about the object’s center of gravity.
In designing a task requiring pushing objects, it is advantageous to consider:
Use body weight to push without any lifting force applied.
Based on anthropometric data, the design features of a work station should accommodate which of the following range of measurements?
5th to 95th percentile
What does the Recommended Weight Limit indicate?
indicates the weight of the load that nearly all health workers can lift during a given period of time without risking lower back injury.
RWL = LC x HM x VM x DM x AM x FM x CM
What are some forms of machine guarding?
Fixed, Adjustable, and Self-Adjusting
Major causes of musculoskeletal injuries include:
- High Task Repetition
- Forceful Exertions
- Repetitive or Sustained Awkward Postures
What is the formula for Safe Working Load?
SWL = MBL / SF
Safe Working Load = Minimum Breaking Load / Safety Factor
The guard on a grinding wheel must:
- Cover the wheel as completely as the nature of work permits
- Be adjustable.
What is the formula for distance?
Distance = velocity x time
