冰面对溜冰运动员的最大静摩擦力为运动员重力的k倍,在水平冰面

冰面对溜冰运动员的最大静摩擦力为运动员重力的k倍,在水平冰面上沿半径为R的圆周滑行的运动员,其安全速度为(    )

A.v=k   B.v≤   C.v≤   D.v≤

答案

B

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