What applied force would be needed to get a 500 kg box to start moving relative to the ground if the static frictional coefficient between the ground and the box is 0.33? The applied force is horizontal and the ground is flat.

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!