When you swing a yo-yo around your head it experiences something called a centripetal acceleration. The formula for this acceleration is a = T2 . The list of variables are as follows . a is acceleration measured in m/s2 . r is the radius of the circle in m . T is the time in seconds for one revolution a) Rearrange the formula for T. (2 marks) b) Calculate the time for the yo-yo to swing around once if the length of the string is 0. 93 m and the acceleration is 27 m / S, rounding to the nearest tenth of a second. (1 mark)