Question
Given graph is a plot of magnitude of normal, limiting friction, kinetic friction and static frction versus angle of inclination θ for the coin lying on book. 17 points are labeled with numbers. The coin slips at a certain angle θc. The coefficient of static friction is 0.6, and the coefficient of kinetic friction is 0.4. First consider the range of θ for which the coin is stationary. Which points of the curves can represent
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Next, consider the range of θ for which the coin slides. Which points can give the magnitude of the kinetic frictional force on the coin from the book?
The magnitude of the normal force on the coin from the book
The magnitude of the static frictional force on the coin from the book