Question

Help with this question !

Answer 1

see explanation

Explanation:

Given

T= 2π
`\sqrt{(L)/(g) }`

Square both sides

T² = 4π²
`(L)/(g)` ( divide both sides by 4π²

`(T^2)/(4\pi ^2)` =
`(L)/(g)`

Multiply both sides by g

L =
`(gT^2)/(4\pi^2 )`