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12 questions from this quiz
The normal contact force
How rough the contact between objects is
F≤μRF \leq \mu RF≤μR
Opposes the driving force
Fmax=μRF_{max} = \mu RFmax=μR
On the point of slipping
At its maximum value FmaxF_{max}Fmax
8g8g8g N
4g4g4g N
F≤μsRF \leq \mu_s RF≤μsR
At limiting equilibrium (point of slip)
Pcos60°P \cos 60°Pcos60°
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