What is the length of the rod?

**Answer 1**

T = 2PI*√L/g

since PI an g are both constant , we can replace 2PI/√g with the ratio 2*3.1416/√9.80665 = 2.0064 ; furthermore we can square both sides of the equation getting :

T^2 = 2.0064^2*L

L = 1.50^2/2.0064^2 = 0.5589 m… round it the way u like

**Answer 2**

T = 2π√(L/g)

9.81*1.5²/4π² = L = 0.559m or about 0.56m