A ball with a mass of 0.8 kg is attached to the end of a 2 m long cable and rotated in a circular orbit in the horizontal plane. If the maximum velocity the ball will have before the cable breaks is 12 m/s, what is the maximum tensile force the cable can withstand, in N?    a) 36.2  B) 42.5  NS) 57.6  D) 25.4  TO) 63.1

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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!