[填空题]
A bucket of mass 2.00 ryp7f 8j6 j,dq36*y z/hiy eg-ns,wtqkg is whirled in a vertical circle o4p(yn7qlmo ; of radius 1.10 m. At the lowest poilpoy;n 4(oq7 mnt of its 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?
