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Question 4.S&C.6: You push on a piece of furniture and it slides at constant s...

You push on a piece of furniture and it slides at constant speed across the kitchen floor. In other words, it is in equilibrium. Two horizontal forces act on it. One is your push and the other is the force of friction that acts in the opposite direction. Which force is greater?

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Neither, for both forces have the same magnitude. If you call your push positive, then the friction is negative. Since the pushed furniture is in equilibrium, can you see that the two forces combine to equal zero?

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