The period of a pendulum does not depend on its mass. The period of a simple pendulum is determined by the length of the pendulum and the acceleration due to gravity, but it is independent of the mass of the pendulum bob. Therefore, increasing or decreasing the mass of the pendulum bob will not change its period.
On the other hand, changing the mass of a pendulum bob can affect its amplitude. The amplitude of a pendulum refers to the maximum angle or displacement reached by the pendulum bob from its equilibrium position. When a pendulum is set in motion, the amplitude decreases over time due to the conversion of its potential energy to kinetic energy and back. The presence of air resistance and other factors also contribute to the decrease in amplitude.
A higher mass pendulum bob may experience more air resistance, leading to a quicker reduction in amplitude compared to a lower mass bob. However, in idealized conditions without air resistance, the mass of the pendulum bob does not directly affect its amplitude. The amplitude is primarily determined by the initial conditions, such as the energy provided to the pendulum, and the factors influencing energy dissipation during its motion.
In summary, the period of a pendulum is not affected by the mass of the pendulum bob, while the amplitude can be influenced by factors such as air resistance, but the mass itself does not directly determine the amplitude.