A motor with an efficiency of 88 percent operates a crane having an efficiency of 42 percentIf the power supplied to the motor is 6.3 kW, with what constant speed does the crane lift a 425 kg crate of machine parts? If you can explain this problem step by step that would be great
The power out of the motor is 0.886,300W 5,544W That is the power into the crane The power out of the crane is 0.425,544W 2328.48W The change in potential energy over time of the crate 2328.48W (Watts Joules per second) d(mgh)/dt mgdh/dt 2328.48J/s 2328.48/4259.8 dh/dt 0.559m/s
