contestada

A 60 kg box is pushed horizontally across the floor a distance of 20 meters. The force required is 15 N. In this effort, how many joules of work are done?

Respuesta :

Answer: 300 J

Explanation:

The Work [tex]W[/tex] done by a Force [tex]F[/tex] refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path with distance [tex]d[/tex].

When the applied force is constant and the direction of the force and the direction of the movement are parallel, the equation to calculate it is:  

[tex]W=(F)(d)[/tex] (1)

Where:

[tex]F=15 N[/tex]

[tex]d=20 m[/tex]

[tex]W=(15 N)(20 m)[/tex] (2)

[tex]W=300 Nm=300 J[/tex] (3) This is the Work (taking into account [tex]1J=(1N)(1m)=Nm[/tex] )