[填空题]
A bucket of mass 2.00 kg is whirled in a vert6fwy 0plyo;,gvrb.dxvq06 ,z ical ci/ad0 y lml*ftfb-9n4zrcle of radius 1.10 m. At the lowest point of its motion the tension in the rope supporting the bucket isb4t*zl0fyaf mn/ld9 - 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?