A Pendulums has a weight hung from a fixed point so that it can swing freely backward and forward, especially a rod with a weight at the end that regulates the mechanism of a clock.
A period of a pendulum is the time it takes the pendulum to make one full back-and-forth swing.
In order to calculate period you divided Change in time divided by number of cycles.
When the Pendulum is longer it doesn’t affect the number of period.
When we put more mass on the end of the pendulum, the number of periods is the same compared to a normal pendulum.
When the swing of the pendulum is bigger the number of period is the same compared to a normal pendulum.
If we want to make an accurate pendulum clock, the mass, size of the swing, and the length doesn’t have to be precisly accurate.
If a pendulum has a period of 3 seconds, and it swings back and forth 20 times, .15 sec has pass.
Something every clock have in common is that they vibrates.
YanPing Liu 