A crate weighing 1000 Newton's needs to be lifted at a constant speed from the ground to a loading dock 1.5 meters high in 5.0 seconds. What power is required to lift the crate?

Respuesta :

Answer:

the Power required is 300 W

Explanation:

We know that the definition of work is given by the following expresion:

[tex]W=F*d[/tex]

the distance is 1.5 meters and the Force is equal to 1000 N.

Replacing this values in the work expresion

[tex]w= 1000 *1.5 = 1500 J[/tex]

And the power is equal to the amount of work done in a given time, therefore we have:

[tex]Power = \frac{work}{time} \\[/tex]

Time in seconds

[tex]Power = 1500/5\\\\Power = 300 watts[/tex]

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