Question

find out the principal behind match box and coin motion​

Answer 1

Answer:

When the coin is inserted vertically in the match box drawer, its weight acts downward. This is balanced by the force of friction on it acting upward. The force of friction on the coin is due to its contact with the inner surface of the match box drawer. So the coin is in equilibrium.

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Answer 2

Answer:

When the inserted vertically in the match box drawer, it's weight acts downword. This is balanced by the force of friction on the acting upward. The force of friction of the coin is due to it's contact with the inner surface of the match box drawer. so the coin is in equlabrium.