This weekend, I had to move a couple of these big boxes from my living room into the office. My living room floor is covered in carpet. The boxes were way to heavy to carry by myself, so I decided to push them. Although I am not exactly sure what the precise amount of the forces acting upon the boxes was, I do know that the forces that were acting upon it was weight (mg), normal force, the force I used to push the boxes, and also friction. There was friction because the boxes were on top of the carpet, causing an opposing motion to my force exerted on the boxes. Many times in the past I have pushed objects across floors, but I never really thought of why it was harder to push things across certain types of surfaces. I now know that friction is an important part of motion.
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