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範例:地表拋體運動與力學能守恆

如圖所示,設平面AB與曲面BCD均光滑,若欲使自A發射之小物體,經B,C,D各點後落回A點。則(1)由D射出的速度應為若干,其落點才剛好落回A處?(2)物體在D處位能比在A處高出多少?(3)於A點發射小物體時,其速度大小應為若干?

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Posted in 重力位能.

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By admin – 2009 年 04 月 15 日

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