posted by John .
A 0.55-kg mass is suspended from a string, forming a pendulum. The period of this pendulum is 1.2 s when the amplitude is 2.2 cm. The mass of the pendulum is now reduced to 0.27 kg. What is the period of oscillation now, when the amplitude is 2.4 cm?
Since when does mass or amplitude matter>
Period: 1.2 seconds.