Observing the changes during the free-fall of a body in Gravitation – Class 9 Science Experiment

Chapter Name: Gravitation

Activity Name: Observing the changes during the free-fall of a body in Gravitation

Activity Description:

Observing the changes during the free-fall of a body in Gravitation - Class 9 Science Experiment

This experiment involves observing the behavior of rubber bands when a stone is placed on them and the tray is dropped, simulating free fall.

The setup consists of a transparent tray with holes on opposite sides, and two or three rubber bands tightly tied between the holes. A stone is placed on the rubber bands. The goal is to see how the rubber bands react during the free fall of the tray.

Required Items:

  • Transparent tray with holes
  • Two or three rubber bands
  • A stone

Step by Step Procedure:

  1. Take the transparent tray and make holes on opposite sides.
  2. Tie two or three rubber bands tightly between the holes, positioning them close to each other.
  3. Place the stone on top of the rubber bands as shown in figures 15(a) and 15(b).
  4. Observe and note whether the rubber bands bend due to the weight of the stone.

Experiment Observations:

  1. Prior to free fall, check if the rubber bands bend due to the weight of the stone.
  2. Drop the tray with the stone to simulate free fall.
  3. Observe and note the behavior of the rubber bands during the free fall.

Precautions:

  1. Ensure that the rubber bands are tightly tied to avoid any slipping or accidents during the experiment.
  2. Use a transparent tray to make it easier to observe the behavior of the rubber bands.

Lesson Learnt from Experiment:

During free fall, the rubber bands remain straight and do not stretch. This observation demonstrates the absence of weight or apparent loss of weight experienced by the stone placed on the rubber bands during free fall.

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