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How did Galileo’s experiments contribute to the law of free fall?
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physics
As conceived by Daniel Bernoulli in Hydrodynamica (1738), gases consist of numerous particles in rapid random motion. He assumed that the pressure of a gas is produced by the direct impact of the particles on the walls of the container.
Galileo Galilei played a pivotal role in overturning long-standing Aristotelian notions of motion through his experimental work. By challenging the belief that the speed of a falling object is proportional to its weight, he established fundamental principles that define the law of free fall.12
His key contributions include:
- Constant Acceleration: Galileo discovered that falling objects undergo constant acceleration toward Earth.1
- Distance and Time: He demonstrated that the distance a body travels from rest is proportional to the square of the elapsed time.12
- Weak Principle of Equivalence: Through experimentation, he showed that all bodies fall with the same acceleration regardless of their composition.1
- Refutation of Aristotle: By dropping objects of different weights, he provided empirical evidence that contradicted the Aristotelian claim that heavier objects fall faster than lighter ones.2
These findings were essential in shifting the scientific understanding of physics away from philosophical assumptions toward a mathematical and experimental approach, ultimately setting the stage for later developments in gravitational theory.1