1. The problem statement, all variables and given/known data A simple pendulum uses a steel wire as the string. The length of this wire is 1.1m at room temperature. If the temperature is increased by 10.8 degrees Celsius, the length of the wire increases by 1.58 mm. What is the change in period of the pendulum? 2. Relevant equations T=2*pi*(sqrt(L/g)) 3. The attempt at a solution First I converted 1.58mm to meter = .00158m I then tried subtracting T initial from T final in order to get the change in period. T initial = 2*pi* (sqrt(1.1/9.8)) = 2.10505 sec. T final = 2*pi* (sqrt (1.1+.00158))/9.8) = 2.10656 sec. getting the change in period to be = .0015 seconds...which is incorrect. I don't know of a formula that takes in to consideration the temperature change. Please help, I have been trying to figure this out for 5 hrs now.