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Two identical water bottles one empty an...

Two identical water bottles one empty and the other filled with water are allowed to roll down an inclined plane. Which one of them reaches the bottom first ? Explain your answer.

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Water filled bottled reaches the bottom first than the empty bottle. Because water filled bottle are much more massive than the empty bottle and when it rolls down it possesses translational kinetic energy of rotatinal kinetic energy. So reaches the bottom quickly.
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