A load of mass 120kg is raised vertically through a height of 2m in 30s by a machine whose efficiency is 100%. Calculate the power generated by the machine. [g = 10ms‾²] By: Sunday|Published on: May 22|Categories: Physics WAEC| 0 comments A. 60W B. 80W C. 100W D. 120W Correct Answer: Option B B. 80W Explanation p = mgh/t=(120×10×2)/30 = 80W Users Also Read These:A block and tackle pulley arrangement has 6 pulleys in which…A machine of velocity ratio 5 is used in lifting a load with…A machine of velocity ratio 6 requires an effort of 400N to…The velocity ratio and efficiency of a system of pulleys are…A machine has a velocity ratio of 4; if it requires 800N to…SEE ALSO Heat may be transferred by conduction, convection and radiation. By which of these methods does heat travel through vacuum?