Coefficient of friction problem

[emscare]

Homework Statement

A block of wood is sitting on an inclined plane. One end of the plane is rised until the wood block slides down. The wood block slides down when the plane has an angle of 17.157
degrees . What is the coefficient of friction?

Homework Equations

F/R

The Attempt at a Solution

opposite/ adjacent = tan theta how i worked out my angle

answer should be 2.074 at the end

Angle of elevation, at which the block slid down the ramp, in degree’s (˚)is an average
= tan-1 (opp. /adj.)
= angle θ

 

[PhanthomJay]

Please show how you arrived at the answer...something is not right.

 

[ashishsinghal]

Hey ainhaini,
Since you are new to PF I should tell you that you are not supposed to give the whole answer. Just give hints or solve the doubt