A solid sphere and a hollow sphere of same mass and radius are rolled down an incline. Which reaches bottom first? MCQ with Answer and Explanation

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A solid sphere and a hollow sphere of same mass and radius are rolled down an incline. Which reaches bottom first?

A. Hollow sphere

B. Both together

C. Depends on material

D. Solid sphere

Answer: Option D

Solution (By JKSSB Mock Tests)

Solid sphere has smaller moment of inertia (2/5 MR²) than hollow (2/3 MR²). Less energy in rotation, more in translation, faster.

This question belongs to: Science Physics

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