Question

Calculate the length of a seconds pendulum at a place where g = 9.8 ms^-2.

Answer 1

G = 9.8 ms^-2
Time, T for seconds pendulum = 2 s

Now, T= 2 `pisqrt(l/g)`
T² = 4π² l/g

L = T²g/4π²

= 2² x 9.8/4 x 3.14²

=0.994 m