
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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