You are a fitness trainer developing an exercise that involves pulling a heavy crate across a rough surface. You attach a rope to a crate of mass =45.0 kg and place it on a carpeted track. The coefficient of kinetic friction between the crate and the carpet is k=0.430. To test the apparatus, you have one of your employees pull on the rope as hard as she can.
If she pulls with a force of 295 N along the direction of the rope while the rope makes an angle of 29.0∘ with the floor, as shown in the figure, what is the acceleration of the box?