If you’ve been to Liberty Science Center, you’ve seen the Hoberman Sphere! We’re focusing on this iconic structure and sharing some of its fun facts for Day 7 of our 12 Days of Science 🤩✨ | Liberty Science Center

1.1K views | DIY expanding circle kinetic mechanism (based on Hoberman sphere).All you need is: Thick paper, Paper fasteners #science #STEM #learningisfun #scienceiscool #kineticart | Moonshotkidz | Facebook

When you spin a fully expanded Hoberman Sphere, it rotates slowly. But if you collapse it mid-spin, the rotation speeds up dramatically. First we need to know that momentum measures how difficult it is to stop a moving object and it depends on the object's mass and velocity: ▪︎ Linear momentum refers to straight line motion (a tennis ball is easier to stop than a bowling ball). ▪︎ Angular momentum applies to spinning objects and depends on mass and angular velocity (a coin flip is easier to stop