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For a wheel spinning on an axis through its center, the ratio of the tangential acceleration of a point on the rim to the tangential acceleration of a point halfway between the center and the rim is:


A) 1
B) 2
C) 1/2
D) 4
E) 1/4

F) A) and B)
G) A) and C)

Correct Answer

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The rotational inertia of a solid uniform sphere about a diameter is (2/5) MR2, where M is its mass and R is its radius. If the sphere is pivoted about an axis that is tangent to its surface, its rotational inertia is:


A) MR2
B) (2/5) MR2
C) (3/5) MR2
D) (5/2) MR2
E) (7/5) MR2

F) B) and E)
G) A) and E)

Correct Answer

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