Pablo ties a small stone to the end of a rope and is spun in a horizontal circle. If the mass of the stone is 0.40 kg and that of the rope is 0.75 m. What is the largest speed that the stone can have if the rope will break when the tension is 260 N?

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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!