1. The problem statement, all variables and given/known data Example: A 50 kg gymnast does giant circles around a horizontal bar. At the top of her swing her center of mass is 1.0 m above the bar travelling 1.2 m/s. what is the speed of her center of mass at the bottom of her swing where her center at mass is 1.0 m below the bar? ( No given diagram) 2. Relevant equations [K + Eg + Es] = [K + Eg + Es + Ef] Initial Final K=1/2mv^2 Eg=mgh Es= 1/2 kx^2 Ef = uNd 3. The attempt at a solution [K + Eg] = [K] 1/2mv^(2) + mgh = 1/2mv^(2) 1/2(50 kg)(1.2m/s)^(2) + (50kg)(9.8 Nt/kg)(1.0m) = 1/2(50 kg)(v)^(2) 520 = 25(v)^(2) v=4.56 m/s is this right? If its not can someone please walk me through what I did wrong. Thank You so much. I'm just getting ready for a test soon.