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|Published on: May 23|Categories: 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 machine of velocity ratio 6 requires an effort of…A projectile of mass 4kg is fired vertically and…An object of mass 0.25kg moves at a height h above…A machine of efficiency 80% is used to lift a box.…A body of mass 4.2kg moving with velocity 10ms−¹ due…SEE ALSO A ball is dropped from the top of a tower. Due to air resistance, it reaches terminal velocity. Which of the following statement(s) about its motion is/are correct?