A bucket mass of 1 kg is whirled in a vertical circle of radius 1 m. How fast must the bucket move at the top of the circle so that the rope doesn't slack?
F1=F2,F_1=F_2,F1=F2,
mg=mv2r,mg=m\frac{v^2}r,mg=mrv2,
v=gr=3.13 ms.v=\sqrt{gr}=3.13~\frac ms.v=gr=3.13 sm.
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