Galileo's Law of Odd Numbers
The distances traversed during equal time intervals in free fall
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Time Interval (τ) | Position (y) | Position in y₀ units | Distance in Interval | Ratio |
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Physics Explanation:
Galileo's law of odd numbers states that the distances traversed during equal time intervals by a body falling from rest stand to one another in the ratio of odd numbers beginning with unity (1:3:5:7...).
The position of a freely falling object is given by:
y = ½gt²
If we take y₀ = ½gτ² as the position after the first time interval τ, then:
- After 1τ: position = 1y₀
- After 2τ: position = 4y₀ (distance from previous interval = 3y₀)
- After 3τ: position = 9y₀ (distance from previous interval = 5y₀)
- After 4τ: position = 16y₀ (distance from previous interval = 7y₀)
- And so on...
This shows the distances in successive intervals follow the ratio 1:3:5:7... demonstrating Galileo's law of odd numbers.
Key observations:
- The distance fallen increases with the square of time
- Each time interval's distance is proportional to consecutive odd numbers
- The total distance fallen after n intervals is n²y₀
- The incremental distance during the nth interval is (2n-1)y₀