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String is wrapped around the outer rim of a solid uniform cylinder that is free to rotate about a frictionless axle through its center.
When it’s string is pulled with a force P tangent to the rim, it gives the cylinder an angular acceleration a. If the cylinder had thrice the radius, but everything else was the same, the angular acceleration would be
A. 3a
B. 9a
C. A/9
D. A/3

Sagot :

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