Today students completed the Gravity Drop Lab. In the experiment we tried to prove that (a) gravity causes objects to accelerate and (b) gravity affects all objects equally. Students dropped a heavy metal marble and a lighter plastic marble through a photogate from varying drop heights. Then they calculated the speed at which the marble was falling. By doing this, they noticed two things. First, the higher the drop height, the smaller the time through the photogate — the marble was falling faster! And second, it didn’t matter that one marble was five times heavier than the other, they both fell at the same rate — Earth’s gravity affects all objects equally!
February 9 – Gravity Drop Lab (pg504).docx