AP Physics 1mediummcq1 pt
A hoop, a disk, and a sphere of equal mass and radius race down an incline from rest. Which reaches the bottom first?
A.The sphere
B.The hoop
C.The disk
D.All tie
Explanation
Core Concept
The smallest rotational inertia (⅖mr²) leaves the most energy for translation, so the sphere wins.
Correct Answer
AThe sphere
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