Question

if a solid sphere and a solid sphere are allowed to roll down on a inclined plane then which one will reach the ground faster ?

Answer 1

SPHERE which has higher mass that will first reach ground.

Answer 2

acceleration is inversely proportional to moment of inertia

Thus whichever object has a lower MOI it will accelerate faster and so will reach the ground faster .

MOI:::>   RING(about axis)>HOLLOW SPHERE>DISC=CYLINDER(about axis)>SOLID SPHERE

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