Freefall
#science
Remembering my time as a teacher about the beginning of the free fall class, which began with the next question.
If we drop simultaneously and from the same height a stone and a sheet of paper, which one reaches the ground first, most often the answer was stone
But this was not the right one if we did not take into account the air resistance and the explanation was presented with the Galileo experiment
Regarding the study of the freefall movement, the Greek philosopher Aristotle (384-322 BC) assumed that heavier objects fell faster than lightest objects. This assumption was maintained for almost 2000 years until, at the end of the 16th century, Italian mathematician Galileo Galilei (1564-1642) showed that in reality all objects fall at the same time regardless of the weight of these
Galileo was convinced that in a completely free air space, two bodies in free fall covered equal distances in equal times regardless of their weight. This radically contradicted Aristotelian notions about free fall. Of course, at that time, it was very difficult to accurately measure how long it takes an object to fall a vertical distance. However, Galileo realized that the movement of a freefall object was equivalent to the movement of a dial rolling down an inclined plane. Therefore, he designed an inclined plane to study the movement of spheres rolling down, where the elapsed time could be measured. The result shows that without taking into account air resistance all bodies fall simultaneously independent of their mass
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Maria
4 years ago
very interesting
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