Problem 6-47 Dynamics with friction - Part 3 - A

A boy drags a huge garbage can of mass \(27\; kg\) along a horizontal driveway at a constant speed of \(1.8\; m/s\). He exerts a force of \(112\; N\) at an angle of \(27^\circ\) above the horizontal. Determine the coefficient of kinetic friction between the can and the driveway.

Accumulated Solution

FBD with all angles, directions and forces indicated.

\( \mu_K = F_K/F_N\)

Correct

So we must find \(F_K\) and \(F_N\)

What is the acceleration in the \(y\) direction?

(A)   \(0\)

(B)   \(g\)

(C)   \(-g\)