6.8.1 - Principle of moments
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Practice Questions
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What is a moment in physics?
💡 Hint: Consider how forces can make things rotate.
Define a fulcrum.
💡 Hint: Think about the center of a seesaw.
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Interactive Quizzes
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What does the Principle of Moments state?
💡 Hint: Think about how levers operate.
True or False: The principle of moments applies to all types of forces, including those not perpendicular to the lever.
💡 Hint: Consider different angles of force application.
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Challenge Problems
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A worker needs to lift a load of 500 N. If they use a lever with a load arm of 4 m, at what distance should they apply the effort to balance the load?
💡 Hint: Rearrange the formula to solve for the distance.
Design a lever system that allows a person to lift a 300 N load with just 100 N of effort. Calculate the necessary lengths of the load arm and effort arm.
💡 Hint: The ratio of forces will help to identify proportions of the arms needed.
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