When do I use fₛ(max) = μₛN in Laws of Motion, and what does it mean?
the maximum static friction before an object starts to slip.
fₛ(max) = μₛN — the maximum static friction before an object starts to slip. Use it when: the object is still stationary. Always check the condition holds before plugging in numbers.
Key point
fₛ(max) = μₛN
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