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Question: You have decided to move a refrigerator (mass = 72.7 kg, including all the contents) to the other side of the room. You slide it across the floor on a straight path of length 7.85 m, and the coefficient of kinetic friction between floor and fridge is 0.477. Happy about your accomplishment, you leave the apartment. Your roommate comes home, wonders why the fridge is on the other side of the room, picks it up (you have a strong roommate!), carries it back to where it was originally, and puts it down.
Part A: How much net mechanical works have the two of you done together?
I need help to find how much net mechanical works have the two of you done together.
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