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October 1, 2014

Posts by Chigozie


Total # Posts: 1

English,maths,physics,chemistry
Topic:machine,a block and tackle of 6 pulleys is used to raise a load of 300N steadily through a height of 30m.if the work done against friction is 2000J. calculate:the work done by effort,the efficiency of the system,the applied effort.
March 19, 2012

Pages: 1

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