(c) The sixth coin is pressed against the four coins above it, which are pulling it downward.
The 6th coin has a total downward force of 4mg.
The 6th coin will exert a reaction force upwards, according to Newton’s third law of motion. As a result, the force produced by the sixth coin on the seventh coin is equivalent to 4mg and acts upward.
Ten one rupee coins are put on top of one another on a table. Ten one rupee coins are put on top of one Each coin has a mass of m kg. Give the magnitude and direction of the reaction of the sixth coin on the seventh coin.