The work done on the wall is zero
Explanation:
The work done by a force on an object is given by the equation:
[tex]W=Fd cos \theta[/tex]
where
:
F is the magnitude of the force
d is the displacement
[tex]\theta[/tex] is the angle between the direction of the force and the displacement
In this problem, we have:
F = 20 N is the force applied on the wall
d = 0 is the displacement, since the wall does not move
Therefore, we immediately see that regardless of the angle, the work done is zero:
[tex]W=F(0)cos \theta = 0[/tex]
In fact, work is done only if the displacement is non-zero.
Learn more about work:
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