A block slides upward along a rough incline that makes with the horizontal

PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

5.0\,\text{kg}

block slides upward along a rough incline that makes

30^{\circ}

with the horizontal. Its speed at the bottom is

4.0\,\text{m}\!\cdot\!\text{s}^{-1}

, and it comes to rest after moving

0.60\,\text{m}

along the incline. Take

g=9.8\,\text{m}\!\cdot\!\text{s}^{-2}

. Determine the magnitude of the kinetic friction force acting on the block while it moves up the incline.