9.2 - Factors Affecting Friction
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Practice Questions
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What does friction oppose?
💡 Hint: Think about sliding surfaces.
Name one factor that affects friction.
💡 Hint: Consider, does roughness matter?
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Interactive Quizzes
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What is friction?
💡 Hint: Remember its role in daily activities.
True or false: Friction is always beneficial.
💡 Hint: Consider situations when it causes problems.
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Challenge Problems
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A wooden box requires a force of 50 N to start moving on a concrete surface. If the box is placed on a smooth plastic sheet, how much would you expect that force to change?
💡 Hint: Consider which surface is smoother.
You have two paths: one is a rough terrain and the other is smooth asphalt. Calculate the energy lost due to friction if you applied the same force of 100 N on both paths with respective coefficients of 0.5 and 0.1 for friction.
💡 Hint: Use the formula: Work Done = Force × Distance × Friction Coefficient.
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