[填空题]
A bucket of mass 2.00 kg is whirled cge-nh nu622 wu, 5piiin a vertical circle of radius 1.10 mq8 gvx9okb+82y a*jn k. At the lowest point of its motion the tension in the rope supportingyjo 2+k*nkq9a8 g x8vb 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?