The period T of a clock pendulum (i.e., the time required for one back and forth movement) is given in terms of its lenght L by the equation:

T = [2PI][sqrt L/G], where g is the gravitational constant.

a) Assuming that the lenght of a clock pendulum can vary (say, due to temperature changes), find the rate of change of the period T with respect to the lenght L.

b) If L is in meters (m) and T is in seconds (s), what are the units of the rate of change in part (a)?

c) If a pendulum clock is running slow, should the lenght of the pendulum be increased or decreased to correct the problem?

To me, this tough. Please Help Me solve these problems Please.

Thanks in advance to anyone who help