[填空题]
A bucket of mass 2.00 kg is wp39+2;, p ij tdnt uob2w9elwlhirled in a vertical ci-)wgw-ij mq - o(c;rzmrcle of radius 1.10 m. At the lowest point of its mz r;mcgi w-qjwo -()-motion the tension in the rope supporting the bucket is 25.0 N.
(a) Find the speed of the bucket. $\approx$
(b) How fast must the bucket move at the top of the circle so that the rope does not go slack?
