In Fig.12.1, a boy is shown pushing the box from right to left.


The force of friction will act on the box


In the figure, a boy is pushing the box from right to left, this mans the force of friction will act on the box from left to right.


The force of friction always opposes the applied force.


If you apply the force along the left, friction acts along right.


If you apply the force along the right, friction acts along left.


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