Question

The length of a pendulum varies directly with the square of the period of the pendulum. If a pendulum 2m long has a period of 4 seconds (s), what is the length of a pendulum with a period of 10s?

a. 1.25m

b. 12.5m

c. 80m

d. 800m

Answer 1

B. 12.5m , that's the most possible answer