Physics, 01.10.2019 00:00, littledogy13

If a pulley with six supporting ropes is used to lift a 1200 lb piano, what input force is needed?

a 1800 lbs
b 500 lbs
c 300 lbs
d 200 lbs

Answers: 2

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If a pulley with six supporting ropes is used to lift a 1200 lb piano, what input force is needed? <...