The period of a pendulum is given by:

where L is the pendulum length and g is the gravitational acceleration.
Initially, the period of the pendulum is T=2.00 s while the gravitational acceleration is

. If we re-arrange the previous equation, we can find the pendulum length:

Then the same pendulum is moved to another location, and its new period is

. Again, by re-arranging the same equation, we can find the value of g (gravitational acceleration) at the new location:
