human factor engineering questions
- 1-As forging exit a cooling bath, they are loaded into various tumblers for finishing. Each forging weighs 20 pounds and is lifted from a conveyor that is 38 inches high to a tumbler that is 46 inches high. During the lifting, the worker twists 30⁰ from straight forward. The forgings are relatively small, so the hands are only 5 inches from the waist. The process completes a forging every 20 seconds. The coupling is considered fair, and the operator works a full 8-hour shift?
- A.Calculate the RWL and LI for the following task.
- B.What are your suggestions to improve the lifting process? Which element of the lift do you see most problematic?
- 2-A worker sits at a 23-inch desk on adjustable chair without footrest. What percentage of 60%-female workforce will the workers’ elbows clears the desktop? (Hint: Please refer to the https://www.math.arizona.edu/~rsims/ma464/standardnormaltable.pdf for normal distribution value, and https://multisite.eos.ncsu.edu/www-ergocenter-ncsu-edu/wp-content/uploads/sites/18/2016/06/Anthropometric-Detailed-Data-Tables.pdf for anthropometric data.)
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