The length of the cord for a simple pendulum to have a periodic time of 1 s, take the acceleration due to gravity to be 9.8 m/s2, is:
A) 0.25m
B) 0.99m
C) 1.56m
D) 9.8m

Question

Quizplus · Accepted Answer

The period T of a simple pendulum is given by the formula T = 2π√(L/g). For T = 1 s and g = 9.8 m/s², solving for L gives L = (T²g)/(4π²) = (1² * 9.8)/(4π²) ≈ 0.25 m.

The Length of the Cord for a Simple Pendulum to Have