A coin rides on a turntable without sliding off. The speed of the turntable is s

Question

A coin rides on a turntable without sliding off. The speed of the turntable is slowly increased. Which statement is true about the forces acting on the coin as the speed increases?

1) the normal force on the coin from the turntable decreases, as does the size of the friction force on the coin.

2) the normal force on the coin from the turntable increases, as does the size of the friction force on the coin.

3) the normal force on the coin from the turntable increases, but the size of the friction force on the coin remains the same.

4) the normal force on the coin from the turntable stays the same, but the size of the friction force on the coin increases.

5) the normal force on the coin from the turntable stays the same, as does the friction force on the coin.

Explanation / Answer

3) the normal force on the coin from the turntable increases, but the size of the friction force on the coin remains the same.

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