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How does the Foucault pendulum work?

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How does the Foucault pendulum work?

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Once the pendulum is set in motion, it continues to swing back and forth in a vertical plane defined by the track of the ball and cable. The direction of swing is constant. Although gravity is pulling down on the ball and tension in the cable is holding it up, there is no force acting to change the direction of swing. Why does it appear to be moving in a circle? The apparent change in direction of swing is related to the perspective of the observer. Because no force is acting to change the direction of swing, it doesn’t change. Instead, the floor, the observer, and the Earth’s surface are turning beneath the pendulum. The Earth’s spin is essential to life. Night and day, darkness and light, cooling and warming- these are the result of the spinning Earth. The Earth’s spin contributes to the movement of ocean and wind currents, which in turn affect climate, weather, food production, and our everyday lives. The pendulum’s direction of swing does not spin with the Earth. The hardware holdi

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