PIRA Classification: 3A60.30
Description: A metal rod with an adjustable mass is attached to a Plexiglas sheet that hangs freely from pivots. Ping-pong ball pendula (of different lengths) hang from the Plexiglas. The rod is displaced so the system oscillates freely. Observe which pendula resonate.
Special Instructions: The driving frequency can be changed by changing the position of the mass.
Condition: Ok.
Setup time: 1 minute
Safety Issues: None