What are the equations for static and kinetic coefficents of friction?

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To determine the static and kinetic coefficients of friction, the equations used are μs = Fs/N for static friction and μk = Fk/N for kinetic friction. In this scenario, a force of 75.0 N is needed to initiate motion, indicating the static coefficient of friction (μs) can be calculated using the weight of the block (N = mg = 25.0 kg * 9.81 m/s²). The kinetic coefficient of friction (μk) can be found using the 60.0 N force required to maintain constant velocity. By substituting the values into the equations, both coefficients can be derived. Understanding these coefficients is essential for analyzing frictional forces in physics.
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A Force 75.0 N is required to set a 25.0kg block into motion and a froce of 60.0N is required to leep it in motion at a constant velocity

a) The static coefficent of friction is ?
b) The kinetic coeficent of friction is ?

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Do you know the equations that are needed to find both that static and kinetic coefficents? You have the initial maximum force and the sliding kinetic force as well as the of the object. These three pieces of information are all you will need to find the two coefficents.
 
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