Question #$4(5$ points$)$

A simple pendulum of length $L$ and mass $M$ has frequency $f.$ In order to increase its frequency to $2f$ :

A$)$ increase its length to $4$ L

B$)$ increase its length to $2$ L

C$)$ decrease its length to $\frac{L}{2}$

D$)$ Cecrease its length to $\frac{L}{4}$

$w2w$

E$)$ decrease its mass to