Mathematics, 02.02.2021 18:00 Redhead667
Please somebody help me with this! Erin is trying to lift a piano to the second story of a building. How many pulleys would require the least amount of effort force from Erin.
A. 1 pulley
B. 2. pulleys
C. 3 pulleys
Answers: 3
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Please somebody help me with this! Erin is trying to lift a piano to the second story of a building....
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