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MMLU-Pro / 9513 / A pulley system consisting of two fixed and two movable pulleys (making four…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A pulley system consisting of two fixed and two movable pulleys (making four supporting strands) is used to lift a weight. If the system has an efficiency of 60%, how much weight can be lifted by an applied effort of 50 pounds?

category

physics

options

  1. 150 lb
  2. 90 lb
  3. 160 lb
  4. 80 lb
  5. 110 lb
  6. 200 lb
  7. 140 lb
  8. 130 lb
  9. 120 lb
  10. 100 lb

src

stemez-Physics

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Source and history

Official source

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