work done 0.0 / 5 ? PhysicsForcesGCSEOCR Created by: Tylernilsen123Created on: 06-02-16 17:33 A 1200kg is being lifted by a crane through a height of 12m. The power supply for the crane is 230 v. the lift takes 15 secconds. -efficiency of the system is 35%. how much work is done ? 1200x10x12=144000 1 of 5 What is the power needed ? 144000*15=9600 2 of 5 power needed and to do the work? 9600*0.35=27428 w 3 of 5 current? 27428*230=119 4 of 5 choose the fuse: 6A 10A 16A 20A 32A 50A 119 - NOT POSSIBLE 5 of 5
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