draw a labelled diagram of block and tackle which has 4 pulleys in all. if the efficiency of this machine is 60%.Calculate the load raised by it with a force of 240N how far is the load raised.
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draw a labelled diagram of block and tackle which has 4 pulleys in all. if the efficiency of this machine is 60%.Calculate the load raised by it with a force of 240N how far is the load raised.
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