Friction comparison: static versus dynamic (kinetic) friction Complete the statement: Static friction is always ______ dynamic friction for the same two surfaces in contact. Choose the correct relation.
Mechanical Engineering
Engineering Mechanics
Difficulty: Easy
Choose an option
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Aequal to
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Bless than
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Cgreater than
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Dunrelated to
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Edepends only on speed
Answer
Correct Answer: greater than
Explanation
Concept/Approach
- For a given pair of surfaces, the maximum static friction typically exceeds kinetic (dynamic) friction: μs > μk. Hence, just before motion, the required force is higher than that needed to keep the body sliding at constant speed.
Final Answergreater than