Homework Help: Physics

Posted by Sarah on Wednesday, January 26, 2011 at 9:37pm.

The coefficient of static friction between a block and a horizontal floor is 0.42, while the coefficient of kinetic friction is 0.17. The mass of the block is 3.9 kg. If a horizontal force is slowly increased until it is barely enough to make the block start moving, what is the net force on the block the instant that it starts to slide

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