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An ice hockey puck is tied by a string to a stake in the ice. The puck is then swung in a circle. What force is producing the centripetal acceleration of the puck? Normal force. Gravity. Friction. Tension in the string.

Question

An ice hockey puck is tied by a string to a stake in the ice. The puck is then swung in a circle. What force is producing the centripetal acceleration of the puck? Normal force. Gravity. Friction. Tension in the string.

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Solution

The force that is producing the centripetal acceleration of the puck is the tension in the string. This is because the string is what's physically pulling the puck towards the center of the circle, causing it to move in a circular path rather than in a straight line.

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