- #1

- 1,197

- 1

ANSWER: mk = (1/3)tanX = (1/3)tan(30°) = 0.192

my question is... how did they derive the equation:

mk = (1/3)tanX

all I got was 2/3 g sin X

[tex]\mu m g cos\theta=ma[/tex]

[tex]\mu m g cos\theta=m*\frac{2}{3} g sin\theta[/tex]

[tex]\mu=\frac{2}{3}tan \theta[/tex]