Science Lab Experiment: Pendulum
Demonstration: Pendulum
Object: To determine some characteristics of vibrating objects.
Materials:string, (lengths 60 cm and 30 cm), different weights, watch
Diagram:
Method:Different weights were suspended from a 60 cm length
of string. These same weights were then used
with a 30 cm length of string. In each case the weight
was held in a horizontal position and released.
The number of swings in a 30 second time period was
counted for each weight and for each length of string.
Observations:It was observed that neither the heavy weight
nor the light weight had any effect on the number
of swings. However, the shorter the string,
the greater was the number of swings.
Conclusions: The weight of the object had no effect on the
number of swings. The length of string did have
an effect. It was concluded that in creating
sounds, a shorter string on a musical instrument
will vibrate rapidly and have a higher pitch.
