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Determining force and coefficient of friction

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You pull your 18 kg suitcase at constant speed on a horizontal floor by exerting a 41 N force on the handle, which makes an angle θ with the horizontal. The force of friction on the suitcase is 28 N.

What is the normal force on the suitcase?
What is the coefficient of friction?

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This solution provides assistance in determining force and the coefficient of friction.

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