When the coin starts to slip, the friction force mu*cos17*M*g
is equal to the component of the weight down the incline, M*g sin 17.
Solve for mu, the coefficient of statice friction. The M (mass)and g (acceleration of gravity) terms will cancel out.
a coin rests on a book. the book tilts until the coin just begins to move. the angle is 17 degrees. what is the coefficient of static friction?
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