It was found that a $21$ gram mass hanging from a particular spring had an oscillation period of $1\mathrm{.}8$ seconds.

Part $1$

Correct Answer

Your answer is correct.

$($a$)$ When two $21$ gram masses are hung from this spring, what would you predict for the period in seconds?

New period with two masses $=$ s

Attempts: $1$ of $3$ used

Part $2$