Nina Siti Aminah
While pendulums have been around for thousands of years and have even been successfully included in the high school curriculum, they are still minimally used in physics practicums for resonance materials. In this research, we designed the Barton Pendulum as a practical kit that is simple to operate by teachers and easy for students to observe. The pendulum system consists of a series of paper objects and a small ball connected and suspended by carbolic thread. The small ball here is nothing but the trigger that makes all objects oscillate. As observation material, the length of the rope for each paper object was made different (40 cm; 29.8 cm; 20 cm; 9.5 cm; 6.7 cm). The period of each object in the system is observed using a stopwatch so that the oscillation frequency of each object is known. An object that resonates with a ball is an object that has a string length that is the same as the length of the string that hangs the ball, which means this object has the same natural frequency as the ball's frequency. The phase difference between the object and the trigger is also observed. The phase difference is equal to rad for objects that have a string length equal to the length of the trigger string and the phase difference is equal to rad for objects that have a string length longer than the string length of the trigger.
Making an easy and cheap resonance practical module and tool consisting of a small ball pendulum with varying string lengths hung on a fixed support for high schools. So, learning about physics, especially waves and sound resonance, can be understood and practiced easily.
Makes it easier to learn about physics, especially waves and sound resonance so that it can be understood and practiced easily