How do i find the coefficient of friction

AI Thread Summary
To find the coefficient of static friction for a block sliding down a ramp at an angle of 53.75 degrees, the relevant equations involve the normal force and net force on the incline. The normal force can be calculated using the formula normal force = m * g * cos(angle), while the net force is given by net force = m * g * sin(angle). The mass of the block is not necessary for the calculation, as it will cancel out in the equations. It is also assumed that the acceleration is zero at the point of static friction. Understanding these principles allows for the determination of the coefficient of static friction without needing the block's mass.
adorrea
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Homework Statement



A block begins to slide down a ramp after being elevated to an angle of 53.75 degrees. What is the coefficient of static friction?

Homework Equations





The Attempt at a Solution

 
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What formulas do you know regarding incline planes and friction?
 
normal force=m*g*sin of angle and net force= m*g* cos of angle
 
will i have to find the mass of the block first
 
hi adorrea! :smile:
adorrea said:
will i have to find the mass of the block first

no, call the mass "m" …

it'll cancel out in the end :wink:​

(and assume the acceleration is 0)
 

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