Question

what is the angle of friction between two surface in contact if coefficient of friction is 1/ root 3

Answer 1

We know,

Angle of friction = Angle of repose.

tanФ= μ.

tan Ф= 1/√3√

Ф= 30 degrees.

where Ф is the angle of repose/ friction.

Answer 2

${30}^{0}$

......right answer.......