Physics, 29.12.2020 14:00, whitwelllife
A block and tackle consisting of 5 pulleys is used to raised a load of 400N through a height of 10m. If the work done against friction is 100j.
Calculate;
1)The work done by the effort
2)The efficiency of the system
3)The effort applied
Answers: 3
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A block and tackle consisting of 5 pulleys is used to raised a load of 400N through a height of 10m....
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