Mada Btnua after school science programs in Raanana
Tuesday, January 24, 2012
Our goal this week was to raise a 300 g weight a distance of 30 cm. To do this we used a new kind of simple machine, the pulley. We built 3 different kinds, and in each one analyzed the user's experience.
All pulleys PULL, but up or down? How much string do you need to use? and most importantly...Does it feel any easier than just lifting the weight on your own?