(this is for practice and tutoring purposes only, please include work(equations) used to get each number, I just want to ensure I am doing these right)

Question:

Calculate the frequency (efforts/min), duration (hours/day), and duty cycle (total effort duration as % of cycle) of each scenario

Scenario 1:

• A worker spends 7 hours per day at his desk.
• The worker types 100 words per minute (each word has an average of 7 characters and a space). Each key depression takes about 0.2 seconds.
• The worker also performs approximately 7500 mouse clicks with his/her right hand.
• Each mouse movement and click takes an average of 0.5 seconds.

Scenario 2:

• Two different caps need to be installed into an engine block of a car on an assembly line. These cap fastenings occur with two different interfaces:
• 1) a circular knob and 2) a ridged knob
• With breaks, the task is performed for a total of 8 hours per day
• The worker sees one vehicle every 55 seconds, and performs 2 assemblies (efforts) per vehicle. (1 for the circular knob and 1 for the ridged knob)
• Each connection takes 0.5 sec