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A 5 kg block is resting on a horizontal surface for which µk = 0.1. What will be the acceleration of the block if it is pulled by a 10 N force acting on it in the horizontal direction?

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As fk = µk FN and FN = mg, we can write 

So the block will have an acceleration of 1.02 ms–2 in the direction of externally applied force.

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