A block and tackle system is used to lift a load having four number of pulleys. It lifts a load of 350 kgf through a vertical height of 20 m.The effort applied is equal to 150 kgf. (i) Draw a diagram of the system. (ii) Calculate work done by the effort. (iii)Calculate efficiency of the system
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Answer:
360×20×150
Explanation:
1080000
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