A block and tackle system has 5 pulleys. If an effort of 1000 N is nee – InterviewSolution

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1.	A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in the downward direction to raise a load of 4500 N, calculate the efficiency(%) of the system.90
Answer» A block and tackle system has $5$ pulleys. If an effort of $1000 N$ is needed in the downward direction to raise a load of $4500 N$ , calculate the efficiency( $%$ ) of the system. 90

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