Скачать или смотреть DIME 2006 Winton Woods H. S. Forces & Motion in Microgravity

A high school student team from Winton Wood High School near Cincinnati, Ohio designed a microgravity experiment for the NASA DIME competition. This video clip shows the moving ball bearings exposed to microgravity during a free-fall drop in the NASA Glenn 2.2 Second Drop Tower.

The student team's experiment involved forces and motions of ball bearings revolving in a conical surface. Sets of ball bearings were introduced into the conical surface via clear tubes prior to the experiment being released to fall in the drop tower. Once the ball bearings were in the cone, the experiment was released into free fall producing microgravity conditions for the ball bearings.

Notice the ball bearings circulate at the lower part of the cone where a component of their centripetal acceleration balances gravity. Upon release into free fall, though, the effects of gravity are drastically reduced so the ball bearings' motion carries them up and out of the cone.

http://spaceflightsystems.grc.nasa.go...