g what is the effect on the period of a pendulum if you double its length? the period is decreased by a factor of 2 . the period is decreased by a factor of 2. the period is increased by a factor of 2 . the period is increased by a factor of 2. the period would not change. (b) what is the effect on the period of a pendulum if you decrease its length by 8.60%? (answer this question in terms of the initial period t.) t'