The diagram above illustrates a block and tackle pulley system in which an effort E supports a load of 100.0N. If the efficiency of the machine is 75%, calculate the value of E. by Sunday | Jan 25 | Physics WAEC | 0 comments A. 22.2N B. 38.0N C. 67.0N D. 75.0N Correct Answer: Option A A. 22.2N Users Also Read These:A block and tackle pulley arrangement has 6 pulleys…A machine of efficiency 80% is used to lift a box.…What effort will a machine of efficiency 90% apply…What effort will a machine of efficiency 90% apply…A machine of velocity ratio 6 requires an effort of…