Galileo Galilei, an Italian physicist and astronomer, conducted experiments to show that objects of different masses fall at the same rate of speed when dropped from the same height. This principle is now known as the equivalence principle.
Galileo did.
Galileo and not Newton conducted the experiment at the leaning tower of Pisa. He took a large weight and a small weight and dropped them at the same time. They fell at the same speed and landed together.
Galileo carried out his first experiment on gravity by dropping weights from the Leaning Tower of Pisa in Italy. This famous experiment is said to have demonstrated that objects of different masses fall at the same rate due to gravity.
Galileo Galilei; leaning tower of Pisa.
Galileo Discovered Inertia, he dropped two items from the tower of pisa and realized they fell at the same rate of speed which is approximately 9.29 mps2
Galileo and not newton conducted the experiment at the leaning tower of pisa. He took a large weight and a small weight and dropped them at the same they fell at the same speed and landed together.
Do you mean Galileo Galilei? The Italian guy who dropped things from the Leaning Tower to see what would hit the ground first?
Viviani, a student of Galileo, wrote about his mentor actually dropping a ten pound weight and a one pound weight off the Leaning Tower of Pisa to demonstrate that they would fall at the same rate. There is no evidence from Galileo himself that he he did the experiment. Since he didn't actually write about doing the experiment, science historians believe that it was not done. He did develop a very interesting thought experiment that led to a contradiction, and to his conclusion that the rate of descent would be the same. See the link below for a fun video of the experiment being carried out on the moon.
Armstrong didn't actually do an experiment related to Galileo during the Apollo 11 mission, but there was one carried out on Apollo 15. This related to an experiment that Galileo was supposed to have conducted from the Leaning Tower of Pisa, dropping items of different masses. Aristotle had said that objects of different masses would fall at different speeds, but some people thought differently. Galileo did not in fact record actually doing this, and it is believed that it was really just a "thought experiment". The best way to try this out is in a vacuum, so that there is no air resistance, and the size and shape of the objects being used won't make any difference. So on Apollo 15, Dave Scott, the mission commander, dropped a geological hammer and a feather. If they reached the ground at the same time, this would prove that Galileo's view was correct. This is exactly what happened; the hammer and the feather fell slowly in the Moon's 1/6 gravity and hit the ground together.
Galileo Galilee dropped two balls off of the top of the Leaning Tower of Pisa. One was wooden and the other was a cannon ball. He dropped them at the same time to see which one would hit the ground first.
Galileo would have observed that both the burlap ball and the 2-pound rock would have hit the ground at the same time. This would have demonstrated that objects fall at the same rate regardless of their weight, disproving the prevailing belief at the time that heavier objects fall faster.