1. The problem statement, all variables and given/known data An aluminum clock pendulum having a period of 1.00 s keeps perfect time at 20 degrees celcius. (A) When placed in a room at a temperature of -5.0 Celcius, will it gain or lose time? (B)How much time will it gain or lose every hour. 2. Relevant equations I am pretty sure that this has to due with thermal expansion and motion of a pendulum so: (A) Delta L = (alpha) (Lo) (delta T) (B) T = 2pi *sqrt(L/G) 3. The attempt at a solution I am thinking that the pendulum itself would shrink, therefore making it gain speed, but I just don't know how to set it up correctly??? Any help guys and gals? Thanks!