这是一个关于向心力的问题,
如果要保持罐子也和车一起运动则需要一向心力,也就是倾斜一个角度α,设物体质量m,向心力F,合力一定在绳子上.
见图
tgα=F/mg
F=mv^2/R代入上式中
tgα=F/mg=V^2/gR=28*28/(150*10)≈0.5227
α=27.5945度
A block is hung by a string from the inside roof of a van.Wh
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