Question

Please help me in this question . i’m not good at word probelms

Answer 1

`L=5.0\text{ meters}`

Explanation:

Given the formula for the period of the situation, substitute L=4.5 seconds and solve for T.

`\begin{gathered} T=2\pi\sqrt{(L)/(9.8)} \\ 4.5=2\pi\sqrt{(L)/(9.8)} \\ (81)/(4)=2\pi *(L)/(9.8) \\ L=(81*9.8)/(4*4\pi^2) \\ L=5.0\text{ meters} \end{gathered}`