A sphere and a cylinder, each having identical mass and radius, start rolling down the same incline from rest. Which object will reach the bottom first?

Applied Mechanics and Graphic Statics MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Applied Mechanics and Graphic Staticscivil-engineering-mcqs › applied-mechanics-and-graphic-statics
Published
18 Jan 2019
Last updated
28 May 2026

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Explanation

When a sphere and a cylinder of equal mass and radius roll down an incline, the sphere reaches the bottom first. This occurs because the sphere has a smaller moment of inertia relative to its mass, resulting in less rotational energy and more translational kinetic energy at the bottom compared to the cylinder.

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