A small electric motor is used to lift a 0.50-kilogram mass at constant speed. If the mass is lifted a vertical distance of 1.5 meters in 5.0 seconds, the average power developed by the motor is

Power developed by the motor is 1.47 W

Explanation:

As we know that mechanical power is defined as the ratio of work done per unit time

here we know that work done to lift the mass upward is given as

here we have

m = 0.50 kg

h = 1.5 m

so we have

now it took 5 s to lift the mass so we have

no

sodium is solid at rt