(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:

• 545 screws are fastened into the wood per shift.
• The screw is considered "fastened" after 16 efforts per screw of 180 degrees (8 full revolutions) and each effort takes 0.75 sec.
• The length of the total shift is 400 minutes.

Scenario 2:

• The worker drills 2,600 fasteners per shift and each fastening effort takes 1.8 seconds
• The worker performs this task for 180 minutes per shift