A machine of velocity ratio 5 is used in lifting a load with an effort of 500N. If the machine is 80% efficient. Determine the magnitude of load. by Sunday | May 21 | Physics WAEC | 0 comments A. 2500N B. 2000N C. 900N D. 625N Correct Answer: Option B B. 2000N Users Also Read These:A machine of velocity ratio 6 requires an effort of…A machine whose efficiency is 60% has a velocity…The velocity ratio and efficiency of a system of…A simple machine with an efficiency of 75% lifts a…A machine of efficiency 80% is used to lift a box.…