How high up an inclined track would the ball roll

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Q. A 125g steel ball with kinetic energy of 0.25 J rolls along a horizontal track. How high up an inclined track will the ball roll if friction can be ignored?

Q. A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200 N. The cable is perpendicular to the boom and is attached 4.5 m from the pivot. What is the maximum load that can be suspended from the end of the boom?

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