Experiment -1

Roll three pieces of plasticine into balls of about 2 cm in diameter or 8grams in weight.

Choose 3 wires all of the same thickness. Stick the end of each wire into the middle of a plasticine ball.


Hint ! Make sure the wire is in the middle of the ball, otherwise the experiment will not work well.

Stick the 3 wires and balls into the polystyrene block, so that they stand upright. Push them in by different amounts so that they are different heights, e.g. 10 cm, 15 cm and 20 cm.

One at a time, pull each ball back about 3cm and let go.


Which one has the highest natural frequency? (Answer)
(This will be the one that wobbles backwards and forwards the fastest. )

Take the balls and wires out of the polystyrene block and pull the wires out of the balls.

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