Writing

*g* for the acceleration due to gravity, the period,

*T*, of a pendulum of length

is given by the following equation.

(a) Show that if the length of the pendulum changes by

, the change in the period,

*T*, is given by the following equation. (Do this on paper. Your teacher may ask you to turn in this work.)

(b) If the length of the pendulum increases by

4%, by what percent does the period change?

ok i just need to be directed in the right path....need some help on how and where to start for this problem...any help is greatly appreciated...

mathaction