# A disk and a sphere o same radius but different masses roll off on two inclined planes of the same altitude and lengths. Which one of the two objects gets to the bottom of the plane first? Option 1) Disk Option 2) Sphere Option 3) Both reach at the same time Option 4) Depends on their masses

As learnt in

Rolling of a body on an inclined plane -

- wherein

= Angle of inclination

If the value of   is less, the moment of inertia will be less and greater will be its velocity. The solid body will reach the bottom first.

Option 1)

Disk

Option 2)

Sphere

Option 3)

Both reach at the same time

Option 4)

Depends on their masses

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