![The efficiency of a machine is 75%. If this machine raises a load of 150kg through a vertical height of 20cm, Calculate the work done by labourer using the machine. | Homework.Study.com The efficiency of a machine is 75%. If this machine raises a load of 150kg through a vertical height of 20cm, Calculate the work done by labourer using the machine. | Homework.Study.com](https://homework.study.com/cimages/videopreview/videopreview-full/understanding-the-efficiency-of-compound-machines_01000901_180348.jpg)
The efficiency of a machine is 75%. If this machine raises a load of 150kg through a vertical height of 20cm, Calculate the work done by labourer using the machine. | Homework.Study.com
![Power, Efficiency, and Machines Physics In this lesson, we will discuss the following: Power Efficiency Machines. - ppt download Power, Efficiency, and Machines Physics In this lesson, we will discuss the following: Power Efficiency Machines. - ppt download](https://images.slideplayer.com/18/5704929/slides/slide_11.jpg)
Power, Efficiency, and Machines Physics In this lesson, we will discuss the following: Power Efficiency Machines. - ppt download
An engine can pump 3000 litre of water to a height of 0.045 km in 10 minute calculate work done by machine and its power rating take efficiency 75
![Ch. 5.2 Efficiency. Efficiency efficiency – measurement of the useful work done by a machine compared to the work needed to operate the machine useful. - ppt download Ch. 5.2 Efficiency. Efficiency efficiency – measurement of the useful work done by a machine compared to the work needed to operate the machine useful. - ppt download](https://images.slideplayer.com/26/8707231/slides/slide_8.jpg)