When the linear velocity is V, the radius of the circle is R. if the centripetal force remains unchanged, when the radius of the circle is 2R, the angular velocity should be () A. v2RB. 2v2RC. vRD. 2vR

When the linear velocity is V, the radius of the circle is r, so the centripetal force is f = mv2r, keeping the size of the centripetal force unchanged. When the radius of the circle is 2R, the solution of F = m ω 2 (2R) is: ω = 2v2r, so B

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