A machine of efficiency 8% is used to raise a body of mass 75kg through a vertical height of 3m in 30s. Calculate the power input. (g = 10ms‾²) by Sunday | May 23 | Physics WAEC | 0 comments A. 9.4W B. 60.0W C. 75.0W D. 93.8W Correct Answer: Option D D. 93.8W Users Also Read These:A screw jack with a Tommy bar of length 12cm is used…A machine is used to lift a load of 20 N through a…A body of mass 4.2kg moving with velocity 10ms−¹ due…A body of mass 20g projected vertically upwards in…A body of mass 36kg falls through a viscous liquid…