Power and Efficiency
 

Power and Efficiency problem 28


A crane is used to lift loads vertically. The output power of the crane to lift a car is . The crane then lifts a lorry, which has 3.0 times the weight of the car, through 0.25 of the distance in 0.50 of the time. What is the output power of the crane now?










 

main author and content editor: Daniel Owoyomi