A block and tackle has 5 rope segments holding up a 400 newton load. Ignoring friction, what effort force is needed to lift it?
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Correct!
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Correct answer to question 142 (Mechanical Comprehension): 80 newtons
Method
Effort equals load divided by the number of supporting strands: 400 / 5 = 80 newtons.
Updated: November 2026
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