1. The problem statement, all variables and given/known data Hey, we have this mechanical bat that is attached to a cord and its flying around in a circle on the ceiling. Here is all the information that I have gathered. Mass of the bat: 0.1345 kg 1.609 seconds per revolution length of cord: 0.92 m height from ceiling: 0.65 m Here is what it looks like if it helps. I need to find the tension of the cord. http://i49.tinypic.com/2ujkyme.jpg Steps and equations would be very helpful. Thank you! 2. Relevant equations I don't know what equation to use or where to start. I think it's... Tension*cos(x) = mg 3. The attempt at a solution I don't know where to start; I've drawn a picture if you might help anyone.