How do you calculate effort needed to lift a load?

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  1. #system
  2. #experiences
  3. #lifting
  4. #effort
  5. #equal
  6. #pulley
  7. #200kg
  8. #calculate
  9. #right
  10. #number
  11. #required
  12. #ropes
  13. #divide
  14. #count
  15. #image
  16. #person
  17. #shows