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What is the mechanical efficiency of the lifting system and motor if…?

April 26, 2017efficiency Lifting Mathematics mechanical motor Physics system

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What is the mechanical efficiency of the lifting system and motor if…?

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Put simply, efficiency equals the power you receive divided by the power you put in. You’ll need these 4 basic equations. Power = work / time Work = Force * distance Force = Mass * acceleration Efficiency = Output/Input (in %) The motor is rated at 100w, so that is the power you put in. To lift 50kg, you need to overcome gravity. In this case, Mass = 50kg, gravitational acceleration = 9.81 m/s. From here you can calculate the force required. Then you can calculate the work done, and then the power. This is the power you receive. From here, you can calculate the efficiency. Try to work it out on your own. You’ll learn more.