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09-09-2014
Physics

contestada

A crane does 62,500 joules of work to lift a boulder a distance of 25.0 meters. How much did the boulder
weigh?

Respuesta :

09-09-2014

[tex]W=Fs \\ F=\frac{W}{s}[/tex]
W - work
F - weight
s - distance

[tex]W=62 500 \ J = 62 500 \ N \cdot m \\ s=25 \ m \\ \\ F=\frac{62500 \ N \cdot m}{25 \ m}=2500 \ N[/tex]

The boulder weighed 2500 newtons.

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