7-35. girl pulls a box of mass 20.8 kg
across
the floor. She is exerting a force on the box of 95.6 N, inclined at
35.0°
above the horizontal. The kinetic friction force on the box has a
magnitude
of 75.5 N. Use the work-energy theorem to determine the speed of the
box
after being dragged 0.750 m, assuming it starts from rest. [Ans. 0.45
m/s]
What is the correct FBD for this problem?
