Answer to Question #269787 in Physics for Fanah

Question

A rubber toy duck is at rest on an inclined plane.When the angle of inclination of the plane is increased to 35.4°C,the toy duck begins to slide down the incline.Then,when the angle is decreased to 29.8°C,the speed of the toy duck is constant.What are the coefficients of static and kinetic friction between the toy duck and the incline.

Answer 1

$\mu_s=\tan{35.4}=0.71\\\mu_k=\tan{29.8}=0.57$