The mass in a pendulum clock completes one complete swing in 1.50s.?

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

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