Gravitational acceleration/tension?

[Bigdane]

You swing a 3.22 kg bucket of water in a vertical circle of radius 0.860 m. At the top of the circle the speed of the bucket is 3.30 m/s; at the bottom of the circle its speed is 6.95 m/s. Find the tension in the rope tied to the bucket in the following positions.

(a) the top of the circle
N

(b) the bottom of the circle
N

again like deja vu, i have no idea... please help!

 

[hage567]

Did you draw a diagram with the forces on the bucket? One for when it's at the top and one when it's at the bottom of the circle? Do that first.