The rope that is the farthest from the weight makes it easiest to do the job. Young children may have difficulty bowing the Chladni plates themselves, it may work better if an adult makes the plate vibrate. Students can feel the sand moving if they put their hands palms-down very close to the vibrating plate. They can also feel the plate vibrating if they gently place a finger on a plate as it is being bowed. At this stop, students will observe what happens when metal plates vibrate.
Students can also hear sounds as the bow moves along the edge of the plate.
That block is pushed out from the stack onto the table. The remaining blocks fall down to the table. The Simple Pendulums go back and forth like a swing at the playground. The top of the pendulums are attached to something that doesnOt move while the bottoms of the pendulums can move. All of the pendulums swing the same way, but at different speeds except the two that are the same length.