1. The problem statement, all variables and given/known data You've taken your neighbor's young child to the carnival to ride the rides. She wants to ride The Rocket. Eight rocket-shaped cars hang by chains from the outside edge of a large steel disk. A vertical axle through the center of the ride turns the disk, causing the cars to revolve in a circle. You've just finished taking physics, so you decide to figure out the speed of the cars while you wait. You estimate that the disk is 6m in diameter and the chains are 6m long. The ride takes 10s to reach full speed, then the cars swing out until the chains are 30degrees from vertical. 2. Relevant equations Fc=m(v^2)/r w=mg 3. The attempt at a solution I summed the Forces in the Y direction, so 0=Ft*cos30 -mg Ft being the tension force on the cable of the car Ft=mg/cos30 2nd equation: Ft*sin30 -Fc Fc=Ft*sin30 sub in mv^2/r for Fc solved for v and i got v=sqrt(r*g*tan30) i plugged in the radius of the disk which is 3m and gravity which is 9.81m/s^2 v=4.122m/s^2, but that was wrong What am I doing wrong?