Kelli weighs 396 N, and she is sitting on on a playground swing that hangs 0.6 m above the ground. Her mom pulls the swing back and releases it when…

Kelli weighs 396 N, and she is sitting on on a playground swing that hangs 0.6 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.2 m above the ground. If Kelli moves through the lowest point at 1.7 m/s, how much work was done on the swing by friction?

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