Materials:
* Object to drop (e.g., a ball)
* Measuring tape or ruler
* Stopwatch or timer
Procedure:
1. Measure the distance: Choose a safe height to drop the object from, and measure the distance from the release point to the ground. Let's call this distance 'd'.
2. Drop the object: Carefully release the object from rest and start your stopwatch simultaneously.
3. Measure the time: Stop the stopwatch the instant the object hits the ground. This is the time it took to fall, 't'.
4. Calculate acceleration due to gravity (g): Use the following equation from kinematics:
* d = (1/2)gt²
* Rearranging the equation to solve for 'g', we get:
* g = 2d/t²
Example:
Let's say you drop the object from a height of 2 meters and it takes 0.64 seconds to hit the ground:
* d = 2 meters
* t = 0.64 seconds
* g = 2 * 2 meters / (0.64 seconds)²
* g ≈ 9.77 m/s²
Important Notes:
* Air resistance: This method assumes negligible air resistance. If the object is light or has a large surface area, air resistance will affect the results.
* Precision: The accuracy of your measurements will impact the precision of your calculated 'g'.
* Safety: Choose a safe height to drop the object from. Ensure there are no obstacles or people in the path of the falling object.
* Average value: Repeat the experiment several times and calculate the average value of 'g' to get a more accurate result.
Expected Result:
The acceleration due to gravity is approximately 9.8 m/s² near the Earth's surface. Your experimental value may vary slightly due to factors like air resistance and measurement errors.
