## Question:

The package of mass M is released from rest at A. It slides down the smooth plane which is inclined at angle θ onto the rough surface having a coefficient of kinetic friction of ${ μ }_{ k }$. Determine the total time of travel before the package stops sliding. Neglect the size of the package. Given: M = 5 kg , h = 3 m , θ = 30 deg , g = ${ 9.81 m/s }^{ 2 }$, ${ μ }_{ k }$ = 0.2