Question

3) Try this.
Take a plastic ruler and hold one of its ends pressed down on the table, as shown in the picture, so that a large portion of the ruler is off the table. Now ask your friend to press the free end of the ruler down and release it. Observe.

(1) When you press the ruler what happens?
(2) Which type of motion is it?
(3) Observe what happens?​

Answer 1

Explanation:

1) when you press the ruler it starts vibrating

2) its periodic back and forth motion

3)when you press the ruler it starts vibrating in back and forth motion making sound

Hope it helped you

Answer 2

Answer:

1) The ruler begins to vibrate when you press it.

2) Its cyclical backward and forward motion.

3) The ruler begins to vibrate back and forth when you press it, producing sound.

Explanation :

• When the ruler is bent, the energy it contains is potential energy.
• When the ruler is released, this potential energy is transformed into kinetic energy, which causes vibrations to be produced.
• The ruler started to vibrate or move quickly back and forth as soon as you let go of it.
• The sound was created by the ruler's oscillation.
• The air around the ruler was moved by the ruler's vibration, which also caused the air to vibrate.
• The movement of molecules pressed together creates waves when the ruler vibrates back and forth (pressure waves).
• These pressure waves are sent by the molecules through the atmosphere to our where they are transformed into electrical signals and relayed to the brain.

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