How do i find the coefficient of friction

[adorrea]

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

 

[Villyer]

What formulas do you know regarding incline planes and friction?

 

[adorrea]

normal force=m*g*sin of angle and net force= m*g* cos of angle

 

[adorrea]

will i have to find the mass of the block first

 

[tiny-tim]

hi adorrea!

will i have to find the mass of the block first

no, call the mass "m" …

it'll cancel out in the end ​

(and assume the acceleration is 0)