Problem M. 372. (November 2017)
M. 372. Make a sandglass from a cylinder-shaped plastic (PET) water bottle. Make a small hole (of diameter approximately 8-10 mm) on the bottle cap through which the dry sand can flow out. Measure how the amount of the out-flowing sand in a unit of time depends on the height of the sand in the bottle.
Deadline expired on December 11, 2017.
13 students sent a solution. 6 points: Fajszi Bulcsú, Horváth 008 László, Merkl Gergely, Morvai Orsolya, Olosz Adél, Osváth Klára. 4 points: 2 students. 3 points: 1 student. 2 points: 2 students. 1 point: 1 student. 0 point: 1 student.