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範例:浮力與作功

一邊長為a,密度為ρ之正立方體木塊浮於密度為d(d>ρ)之液面上,(1)欲將其完全沒入液體中需施力若干?至少需作功若干?設液面高度不變。(2)若木塊恰完全沒入液面下時,再使其沈入s深至少需再作功若干? （重力加速度為g）  【師大附中】


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Posted in 功與變力作功, 液體的浮力.

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By admin – 2009 年 06 月 06 日

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