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A box is pulled a distance of 20 meters by a force of magnitude 40N, in the direction of the force ,over a period of 10 seconds Find the power generated by the force

Respuesta :

The formula for the power is,

[tex]\begin{gathered} P=\frac{W}{t} \\ Where, \\ P=Power \\ W=Work \\ t=Time \end{gathered}[/tex]

Work done is,

[tex]\begin{gathered} W=F\times S \\ Where, \\ W=Work \\ F=Force \\ S=Displacement \\ here, \\ F=40N;\text{ }and\text{ }S=20m; \\ So, \\ W=F\times S=40\times20=800J \end{gathered}[/tex]

Here time taken to do the work is 10 sec

So,

[tex]P=\frac{W}{t}=\frac{800}{10}=80\text{ watt/sec}[/tex]

So power generated by the force is 80 watt/sec.

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