For a simple pendulum to have a period of 1 s it must have a length of
A)1.0 m
B)0.25 m
C)9.8 m
D)4.0 m
E)2.7 m

Question

Quizplus · Accepted Answer

The period $T$ of a simple pendulum is given by the formula $T = 2\pi\sqrt{\frac{L}{g}}$, where $L$ is the length of the pendulum and $g$ is the acceleration due to gravity, approximately $9.8 \, \text{m/s}^2$. Solving for $L$ when $T = 1 \, \text{s}$ gives $L \approx 0.25 \, \text{m}$.

For a Simple Pendulum to Have a Period of 1