试题与答案

如图所示,半径为R,重为G的均匀球靠竖直墙放置,左下方有厚为h(h<R)的木块,

题型:问答题

题目:

如图所示,半径为R,重为G的均匀球靠竖直墙放置,左下方有厚为h(h<R)的木块,若不计摩擦,用至少多大的水平推力F推木块才能使球离开地面?

答案:

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