Observing the energy in an object at some height in Work And Energy – Class 9 Science Experiment

Chapter Name: Work And Energy

Activity Name: Observing the energy in an object at some height in Work And Energy

Activity Description:

In this experiment, we investigate the impact of height on the depth of depression created by a heavy ball dropped onto a thick bed of wet sand. By varying the height of the ball drop from 25cm to 1.5m, we aim to observe any relationship between the height of the drop and the resulting depth of depression, highlighting the concept of energy transfer through changes in position.

Required Items:

  1. Heavy ball
  2. Thick bed of wet sand
  3. Measuring tools (ruler or tape measure)

Step by Step Procedure:

  1. Prepare a thick bed of wet sand and ensure it is level and uniform.
  2. Take the heavy ball and stand beside the sand bed.
  3. Drop the ball onto the sand from a height of 25cm and observe the depression created.
  4. Repeat the process, dropping the ball from heights of 50cm, 75cm, 1m, and finally 1.5m.
  5. After each drop, measure and record the depth of the depression in the sand.
  6. Ensure consistency in the manner of dropping the ball for each height.
  7. Repeat the entire experiment at least three times to obtain accurate and reliable results.

Experiment Observations:

Record the depth of the depression in the sand for each height of the ball drop. Note any patterns or trends observed in the data.

Precautions:

  1. Ensure a safe distance from the area of impact while dropping the ball.
  2. Be cautious while handling the heavy ball to avoid any injuries.
  3. Check that the sand bed is adequately wet and level to provide consistent results.

Lesson Learnt from Experiment:

The experiment demonstrates the relationship between potential energy and the height of an object. As the ball is dropped from higher positions, it gains more potential energy, resulting in deeper depressions in the sand upon impact. This illustrates the concept of energy transfer due to changes in position.

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