When I slowly pulled the cardboard, the coin placed on top of the cardboard remained at rest but was dragged along with cardboard. Explanation: That is because, the coin was dragged by the force in the surface of the cardboard called friction.
the coin will at rest because you slowly pull the cardboard
When I slowly pulled the cardboard, the coin placed on top of the cardboard remained at rest but was dragged along with cardboard. Explanation: That is because, the coin was dragged by the force in the surface of the cardboard called friction.
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you will know the answer if you visualize it
Since the cardboard is at rest we know that it is not experiencing any acceleration, hence, the net forces acting on it add up to zero (in magnitude and direction). Force equals mass times acceleration.
For any object to be at rest the Forces acting on it must be EQUAL in magnitude and OPPOSITE in direction.