What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm? By: Sunday|Published on: Nov 1|Categories: Physics JAMB| 0 comments A. 100N B. 90N C. 80N D. 120N Correct Answer: Option A – 100N Users Also Read These:A machine has an efficiency of 60%. If the machine is…A wheel and axle is used to raise a load of 500N by the…A wheel and an axle is used to raise a load whose weight is…What effort will a machine of efficiency 90% apply to lift a…The fiqure above represents a block-and-tackle pulley system…SEE ALSO A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?