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:The efficiency of a wheel and axle is 100% and the…The velocity ratio and efficiency of a system of…A machine has a velocity ratio of 4; if it requires…A machine of efficiency 80% is used to lift a box.…If the mechanical advantage of a machine is 4. What…