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A 5.0 kg penguin sits on top of a 12 kg sled, as in the figure. A horizontal force of 45 N is applied to the sled, but the penguin keeps himself stationary by holding onto a string attached to the wall. The coefficient of kinetic friction between the penguin and the sled is 0.18, and the coefficient of kinetic friction between the sled and the snow is 0.14.
8 years ago

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bobpursley
And, I wonder if the penguin has a question in this story, or not?
8 years ago

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