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A solid sphere, a hollow sphere, and a ring are placed at the top of a smooth inclined plane and allowed to slide down without rolling. Which of these bodies will have the greatest acceleration along the plane?

1. solid sphere
2. hollow sphere
3. ring
4. all of them have the same acceleration

Correct answer: all of them have the same acceleration

Solution

All objects slide down the incline under the influence of gravity, and since there is no rolling involved, their acceleration is determined solely by the gravitational force acting on them, which is the same for all shapes regardless of their mass distribution.

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